PROMO Guru Autowerks - ZF 6HP26/28 Transmission Adapter

GuruAutowerks

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Nov 26, 2020
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Yes Martymil, I have certainly been screwed over and have no transmission despite it allegedly been built and ready to install.

At least there is some light at the end of the tunnel with this 26/28 kit. Looking forward to this.

Cant imagine how frustrating that is, people playing games and not standing behind their word. We all put way too much time, energy and money into these cars to be messed around with. Never great when the authorities have to take over, but sometimes you gotta do what you gotta do.

I am honored to be the source of that light at the end of the tunnel and we can't wait for our kit make it down under. I'm a closet Holden, and Aussie car lover... you guys know whats up and have an amazing car scene... visiting Australia is on my bucket list! If you have any questions or need anything at all just ask. Wish you the best outcome possible with your "situation" hopefully you'll be made whole again.
 

135i2

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Jul 23, 2017
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Thanks for the sentiment. I have been developing my car continuously since my 135 was 3 days old in 2008. Before that it was a heavily modified '02 V8 Holden V8 Monaro LS2 6.0lt, drag raced to death.

I've seen and tried every development there has been for my n54 with twins and then engineering what was probably the first RHD bottom mount big single turbo kit, along with lots of extraneous parts. Now at version 4 with fully built engine and all the dream car parts I could muster over time. Trans is the last piece of the driveline puzzle so I am looking forward to an OEM based auto solution.
 
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Jun 8, 2017
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Magnolia Texas
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All kinds'a stuff
Great job on this. Will any 26/28 trans work with this kit? What are the OEM platforms that make suitable salvage donors? Or is there a hot ticket on new/reman units? I have an E60 535i with part throttle convertor shudder. This seems to be a worthwhile reason to pull the trans out. I own a normal auto shop near Precision as well.
 
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GuruAutowerks

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Thank you! I havent posted in a while but there is a lotttt going on right now business wise. Ive been gearing up for producing test kits this april.

I can help you source a transmission if you have any questions or need good leads. I can't be responsible for used transmisson which is why I dont up charge or sell them directly... But more than willing to help.

Most common donors in the US are E90 335D RWD cars. I have helped a few customers outside the US source ones from 330D and 530D as well though. V8 6HP26/28 do not fit my adapter due to a completely different bellhousing and starter position.

Currently we do not have a custom tune for E60 E-Shift setups but I have verified it is 100% possible and has been done before. Until custom tune is available E60 owners would have to run an M-Shift setup. Also the trans mount adapter is slightly different and I have not put hands on an E60 to develop that exact mount. If youre local though we could work something out for sure.

Nothing but respect for Precision/BMP, we run some of their fuel system products and theyve always been great with customer service.

Shoot me a Private Message we can discuss more details and since youre local maybe meet up for lunch or something... Let you check the prototype out.
 
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GuruAutowerks

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WARNING THIS IS NOT AN APRIL FOOLS JOKE!

N54 6HP28 Prototype Test Runs


This update is long over due and I can't thank everyone enough for their patience over the past few months. I am very pleased to release our official 6HP28 prototype test video. We are preparing for prototype dyno/track test and a limited run of Test kits.

Before I get into the nitty gritty I want to thank the outsanding people that helped us get this far. It takes a village to complete projects like this and Guru Autowerks is only one piece of that puzzle. Each of these people are masters at what they do and quite literally we could not have done this without them. All have spent years working extremely hard to hone their craft and make it possible for all of us to enjoy their services. I feel extremely fortunate and grateful to have their support now and if deserving into the future.

Everyone @ xHP Team

Rod @ Sutphin Tuning

Eric @ Houston BMW Coding

Ken @ Wedge Performance

Taron @ MBS Performance

George @ Gelashvili Performance

Tyler/Doublespaces @ Spool Street

Thank you all!


Our initial prototype testing was completed January 31st and we conducted hours of testing into February. Everything worked very well and we were over the moon about the results. We did not post a video at that time because the test vehicle still needed some work to be "road/test" worthy. We had numerous warning dash lights on, a very small torque converter seal leak, and an already questionable fuel feed line began to leak... then the "Ice Storm" hit Houston which was the final straw. We set the car up, begin ordering parts and preparing a "to do" list for everything we wanted to complete before an official video update and the coming dyno/track testing. All of that work has been completed and the car is in the best shape its ever been in, not a single dash light, no more fuel or trans fluid leaks.

So what is next? Many of you have been watching this project closely since the initial announcement in December 2020 and are probably wondering... when can I get my hands on this kit? While it can be enticing to push a product to market and start "cashing in" so to speak... we have refused to sell any kits until we go through our testing phase. Below is a rough timeline of our planned product release. During this time things could change but we are working extremely hard to make this happen.

- Prototype Dyno Testing - April sometime with track testing to follow most likely in May.

- Shipping Test Kits - April/May - These test kits have small design revisions and we will be shipping them out to a handful of people that have approached us. This test kit run will be limited, and we have plenty of testers lined up currently. That said if you are interested in one of these test kits, feel free to contact me. My goal is for the testers to break this kit right here and now if its going to break... not later once we are in production phase. So far our prototype has operated flawlessly though and we are very confident our test kits will do the same under any conditions. Time will tell though and that is what testing is for... I cant in good conscience release a full blown product until this thing has been put through the ringer.

- Full Product Release - June/July/August - Make any necessary design revisions, and gear up for an official product release. This product release will most likely include some type of discount via a group buy or other method. I want to reward the people who are supporting us a the beginning of our journey. We are also hoping to have E8x E6x kits available at this time as well.

- AWD Xi R&D - Late 2021, with a possible product release in 2022. Our goal with the AWD setup is to provide the 6HP28 for a beefier transmission solution, but also provide options for stronger transfer case, front LSD and axles wherever possible. Much is unknown currently but I assure you we are going to take a crack at it. A 335xi test car will be purchased for R&D sometime in 2021 and we will start down the road to showing everyone what a strong AWD setup can do with the N54/N55.


Other things we are working on...

- Custom Transmission Cooler kits and individual components for 6HP19/21 and 6HP26/28

- Custom Engine Cooler kits and components

- Other Transmission Conversion kits and anything else that piques our interest


I cant thank the entire community enough for the massive amount of interest we have seen. I've had the pleasure of chatting with all sorts of enthusiasts and businesses from around the world over the past few months. Its extremely inspiring... thank you to each and everyone of you for believing in this project, spreading the word and helping it come to fruition.
 
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GuruAutowerks

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Nov 26, 2020
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Great work Joshua and to all those in bringing this solution to fruition. Puts some spark back into this platform with interesting possibilities ahead.

Thank you! Cant wait to see one of these kits make its way down under and into your car. You promise youre gonna break it if it can be done right hahahah?

Seriously though thank you for the support, I really hope this solves a lot of our fellow 6AT brothers woes. Ours included... because while I have become very good at swapping these transmission in the past few months... none of us really got timmmmme for thatttt. :laughing:
 

GuruAutowerks

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Nov 26, 2020
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Hi everyone, quick Spool Street only update!

We are very close to taking deposits on our small run of test kits. All our ducks are in a row for manufacturing and we are very excited to move forward with the project. We plan on doing about 20 test kits and these kits will all have the latest design revisions that differ from the prototype. These test kits will also include custom CNC 8AN adapters for the transmission cooler lines. Nobody has these adapters on the market and theyre a pivotal piece of making our kit a true "Bolt" in easy to install kit.

I am going to be reaching out to anyone that previously said they were interested in a test kit. If you do not hear from me, please reach out... I am trying to prevent anyone from slipping through the cracks but it may happen. We will also make an official post with test kit details/pricing/timeline before we proceed with confirming our final list of testers and taking deposits.

If you're a newly interested customer that needs details about our test kits please contact us.

Thank you all for the continued support, its time to get this party started!
 

GuruAutowerks

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Nov 26, 2020
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Houston, TX
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We are officially taking deposits on a limited run of N54 N55 6HP28 Transmission Adapter Test Kits!

Total Kit Price = $1650 USD +tax, shipping and paypal fees. Deposit of $950 required, final payment due upon completion.

Send your deposit to [email protected] with Paypal Goods & Services. Please include in the notes “Deposit 6HP28 Test Kit” in the notes.

Note: If you're are an international customer contact us for pricing/shipping quote.
Consult with us and we will do our best to ship anywhere possible.


Machining and manufacturing has already begun and we expect to sell a maximum of 15 to 20 kits for our testing phase. Several deposits have already been submitted ahead of this official announcement. Prototype testing was an overwhelming success and we are excited to receive feedback from testers.

Our #1 goal is to provide a complete and comprehensive product made with the installer in mind. Normal installation procedure and tools required. Just install and use xHP to flash a custom tune. True OEM integration and feel with identical gear ratios, driving manners and characteristics. Its as if nothing changed, except the transmissions ability to handle serious power even in stock form.


6HP28 Kit Components – We thought of everything so you don't have to!

Transmission Adapter – Adapter is uses OEM dowel pins for perfect alignment every time.

Torque Converter Adapter – Compatible with 4 or 6 bolt gas or diesel ZF6HP torque converters

Flywheel Alignment Adapter - Aligns Torque Converter

AN8 Transmission Line Adapters – Buy our optional line kit or DIY your own!

AN8 PTFE Transmission Cooler Lines – Go directly to our optional transmission cooler or your existing cooler setup

Stock Transmission Coolant Line Plugs – For deleting your OEM transmission heat ex-changer

Transmission Mount Adapter – Reuse your OEM transmission cross-member and mounts

OEM Engine/Transmission Dowel Pins – So you don't have to worry about running to the dealership

All necessary hardware adapters/installation! - Including flex plate, starter and bell housing bolts.



Guru Autowerks Optional Components – Consult with us for help deciding what you need.

$400+ Transmission Cooler Kit – Don't have a cooler? We have you covered with the largest wheel well mounted transmission cooler kit on the market. Utilizing a 30 Row core designed to fit with OEM fogs or an electric fan for serious heat management. 30 Row too big for your needs or climate? Swap out to a smaller 28, 25, 19 or 16 Row core. Optional Improved Racing thermostat upgrade also available. Cooler ducting and louvers in development for future releases.



Other Required Components – Pricing incomplete/not exact please contact us for more details.

~$400 - $800 Transmission from M57N2 RWD Diesel models. In the US this is the 09-11 335D other countries vary please consult with us for help.

$75-$100 - Code your VIN to 6HP28 TCU – Completed by mail, remotely, or with vehicle. Our friend Eric @ Houston BMW Coding is available for remote or in person coding.

$350+ Rod Sutphin Custom Tune – Our kit is backed by Rod Sutphins legendary custom transmission tuning!



Other Optional Components

Aftermarket High Stall/Custom Torque Converters – Available through Sutphin Tuning

Performance Valve Body Rebuild Services – Available through Sutphin Tuning

Exedy & Raybestos Performance Clutch Packs – Ford 6R80 shared component

Omega Bronze Bushing Upgrade – A must for anyone rebuilding their transmission!



Massive thanks to all the enthusiasts and professionals I have had the pleasure of talking with over the past 6 months since we announced our prototype adapter. We look forward to proving our product and bringing many more to the market over the coming years.

Joshua Armstrong
Guru Autowerks LLC
 
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vonhassen

Lurker
Dec 4, 2019
10
6
0
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2009 E60 535xi
Hey Joshua :)

I am so insanely hyped to see the progress you have made, along with everyone else who has/will be helping out! I have been following this for a while now & its so cool that the time has come for people to full-send these first units. I am super excited to see where things will go & what this will do for the N54 scene as a whole.

- AWD Xi R&D - Late 2021, with a possible product release in 2022. Our goal with the AWD setup is to provide the 6HP28 for a beefier transmission solution, but also provide options for stronger transfer case, front LSD and axles wherever possible. Much is unknown currently but I assure you we are going to take a crack at it. A 335xi test car will be purchased for R&D sometime in 2021 and we will start down the road to showing everyone what a strong AWD setup can do with the N54/N55.


Whenever you start making moves on taking the Xi AWD setup one step closer to production, let me know. I am very interested in getting in whenever you need me to help out with testing on the E60 Xi platform! I have recently gotten essentially free access to a lift too, so that's pretty convenient. I would love to keep posted about how the Xi development is going once you get that E90 335Xi! I don't know if you would want to make a thread just for that or if you just keep posting here/the release thread, either way I'll be there lol

Also, I did another deep dive on the HTG GCU & was wondering if their GCU might provide something us auto guys have been craving:

The HTG GCU supports its own form of transbraking, where 1st & reverse are simultaneously engaged to build boost for launching. It also supports a "clutch by wire/virtual clutch", you can wire a switch to engage and disengage the clutches at will, allowing clutch kicks & making technical drifting actually possible.

- Do you think that there would be any 6HP28-specific limitations to using either of these advanced control strategies implemented on the HTG GCU?

Obviously using the stock 6HP28 TCU (linked to the stock N54 DME & tuned by Sutphin or XHP) would be the route that 99% of people doing this swap should take, but I am just spitballing the viability of this 3rd control option for those looking to unlock the ability to use a transbrake and/or 'clutch kick' with their 6HP28.


I am sure you have heard about the HTG GCU, but here is a link for anyone to read up on it:
 
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nyt

Sergeant
Sep 15, 2019
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2010 335xi
Hey Joshua :)

I am so insanely hyped to see the progress you have made, along with everyone else who has/will be helping out! I have been following this for a while now & its so cool that the time has come for people to full-send these first units. I am super excited to see where things will go & what this will do for the N54 scene as a whole.




Whenever you start making moves on taking the Xi AWD setup one step closer to production, let me know. I am very interested in getting in whenever you need me to help out with testing on the E60 Xi platform! I have recently gotten essentially free access to a lift too, so that's pretty convenient. I would love to keep posted about how the Xi development is going once you get that E90 335Xi! I don't know if you would want to make a thread just for that or if you just keep posting here/the release thread, either way I'll be there lol

Also, I did another deep dive on the HTG GCU & was wondering if their GCU might provide something us auto guys have been craving:

The HTG GCU supports its own form of transbraking, where 1st & reverse are simultaneously engaged to build boost for launching. It also supports a "clutch by wire/virtual clutch", you can wire a switch to engage and disengage the clutches at will, allowing clutch kicks & making technical drifting actually possible.

- Do you think that there would be any 6HP28-specific limitations to using either of these advanced control strategies implemented on the HTG GCU?

Obviously using the stock 6HP28 TCU (linked to the stock N54 DME & tuned by Sutphin or XHP) would be the route that 99% of people doing this swap should take, but I am just spitballing the viability of this 3rd control option for those looking to unlock the ability to use a transbrake and/or 'clutch kick' with their 6HP28.


I am sure you have heard about the HTG GCU, but here is a link for anyone to read up on it:

If you use the gcu, there are 8hp70s that bolt straight up to the n54. I think those are only rwd, though. Aside from trans brake, I don't think you're going to see any advantages over the stock tcu.
 

vonhassen

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Dec 4, 2019
10
6
0
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2009 E60 535xi
If you use the gcu, there are 8hp70s that bolt straight up to the n54. I think those are only rwd, though. Aside from trans brake, I don't think you're going to see any advantages over the stock tcu.
yeah the loss of AWD going with the 8HP70 would be a deal breaker imo. Being able to switch between AWD & RWD, or custom AWD maps, is such a luxury that I will not give up unless absolutely necessary. I'll just turn up the boost more to make up for the extra weight :cool:

But I plan to run the stock TCU once I can get my hands on Josh's conversion kit for Xi's, maybe indefinitely, but I am just looking for options that will further progress what it is possible to do with these cars. If the GCU setup on the 6HP28 seems viable and we dont run into mechanical limitations before that point, I am saying that I am willing to take that leap and see what it could further unlock potential-wise out of the platform.

Seeking that untapped potential is my ethos
 
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nyt

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Sep 15, 2019
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I'm also interested to see the awd version, as the tc and front diffs are weak, curious to see how that gets addressed. I have an upgraded 6hp21x in my car currently, so I worry about the next weak links failing.
 
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135i2

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Jul 23, 2017
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135i
Great work Joshua.

On board with this project and excited about the possibilities you and others have been working on behind the scenes.

This is the game changer auto guys have been hoping for. OEM setup with the ability to push your auto from just mild to wild power.

And you have all the options covered to make this less of a headache for the enthusiasts here.
 
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GuruAutowerks

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Nov 26, 2020
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Houston, TX
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Hey Joshua :)

I am so insanely hyped to see the progress you have made, along with everyone else who has/will be helping out! I have been following this for a while now & its so cool that the time has come for people to full-send these first units. I am super excited to see where things will go & what this will do for the N54 scene as a whole.




Whenever you start making moves on taking the Xi AWD setup one step closer to production, let me know. I am very interested in getting in whenever you need me to help out with testing on the E60 Xi platform! I have recently gotten essentially free access to a lift too, so that's pretty convenient. I would love to keep posted about how the Xi development is going once you get that E90 335Xi! I don't know if you would want to make a thread just for that or if you just keep posting here/the release thread, either way I'll be there lol

Also, I did another deep dive on the HTG GCU & was wondering if their GCU might provide something us auto guys have been craving:

The HTG GCU supports its own form of transbraking, where 1st & reverse are simultaneously engaged to build boost for launching. It also supports a "clutch by wire/virtual clutch", you can wire a switch to engage and disengage the clutches at will, allowing clutch kicks & making technical drifting actually possible.

- Do you think that there would be any 6HP28-specific limitations to using either of these advanced control strategies implemented on the HTG GCU?

Obviously using the stock 6HP28 TCU (linked to the stock N54 DME & tuned by Sutphin or XHP) would be the route that 99% of people doing this swap should take, but I am just spitballing the viability of this 3rd control option for those looking to unlock the ability to use a transbrake and/or 'clutch kick' with their 6HP28.


I am sure you have heard about the HTG GCU, but here is a link for anyone to read up on it:


Thank you Von for the continued support, I know we have a lot of lurkers around waiting to see how testing goes and what else is in store. I have seen a big amount of AWD owners contact me with the same amount of hype you have. There is also an engineer who works at the ATC production company who contacted me just to chat and said hes very interested to see what we do as well. I promise we are going to be seeing some type of progress on that front and will keep you updated! Most likely a new thread will be made specifically for the AWD setup and I would also post in some of the AWD FB groups interested parties have invited me to.

I think HTG is amazing, I dont forsee any issues or limitations with running it and the possibilities are pretty endless for what you can do. I really do hope we see some people go that route as well. Concerning the trans brake, its funny you mention that because one of my goals in the coming months... possibly for testers will be trying to provide information for installing/wiring up a real trans brake for the stock TCU setup using the solenoids. It has been done before by ohters, but information is vague at best and I dont have a first hand knoweldge currently. My hope is that we dont run into TCU codes or issues caused from trying to engage 1st and reverse at the same time etc. The clutch kick is amazing too, I saw that in one of their drifting videos... very cool.


If you use the gcu, there are 8hp70s that bolt straight up to the n54. I think those are only rwd, though. Aside from trans brake, I don't think you're going to see any advantages over the stock tcu.


Ive read that thread, the facebook posts and have explored what that person was talking about as far as I could. Personally I cant confirm for sure there is an N54/N55 8HP70 that actually bolts directly up and he never provided concrete evidence to back it up. So like many things in this platform, its murky at best and we do know or strongly suspect availability is from a European donor car only which makes it much harder for most people to obtain. That said, we are already exploring options for 8HP solutions and we would love to be able to offer an identical kit to the 6HP28 if we can do it with the OEM TCU and a simple xHP tune. If anyone can prove that the existence of this unicorn 8HP70 is real I would love to see it though.

Also wanted to say I read your build/nizpro thread as well as a few others youve done and great stuff in there! Youre extremely knowledgeable and its a obviously arent afraid to get dirty and figure things out. Nothing but respect!
 
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nyt

Sergeant
Sep 15, 2019
331
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2010 335xi
Thank you Von for the continued support, I know we have a lot of lurkers around waiting to see how testing goes and what else is in store. I have seen a big amount of AWD owners contact me with the same amount of hype you have. There is also an engineer who works at the ATC production company who contacted me just to chat and said hes very interested to see what we do as well. I promise we are going to be seeing some type of progress on that front and will keep you updated! Most likely a new thread will be made specifically for the AWD setup and I would also post in some of the AWD FB groups interested parties have invited me to.

I think HTG is amazing, I dont forsee any issues or limitations with running it and the possibilities are pretty endless for what you can do. I really do hope we see some people go that route as well. Concerning the trans brake, its funny you mention that because one of my goals in the coming months... possibly for testers will be trying to provide information for installing/wiring up a real trans brake for the stock TCU setup using the solenoids. It has been done before by ohters, but information is vague at best and I dont have a first hand knoweldge currently. My hope is that we dont run into TCU codes or issues caused from trying to engage 1st and reverse at the same time etc. The clutch kick is amazing too, I saw that in one of their drifting videos... very cool.


Ive read that thread, the facebook posts and have explored what that person was talking about as far as I could. Personally I cant confirm for sure there is an N54/N55 8HP70 that actually bolts directly up and he never provided concrete evidence to back it up. So like many things in this platform, its murky at best and we do know or strongly suspect availability is from a European donor car only which makes it much harder for most people to obtain. That said, we are already exploring options for 8HP solutions and we would love to be able to offer an identical kit to the 6HP28 if we can do it with the OEM TCU and a simple xHP tune. If anyone can prove that the existence of this unicorn 8HP70 is real I would love to see it though.

Also wanted to say I read your build/nizpro thread as well as a few others youve done and great stuff in there! Youre extremely knowledgeable and its a obviously arent afraid to get dirty and figure things out. Nothing but respect!

Thanks,

There was a lot of bullshit thrown around, and lots of speculation.

I went through the entire zf product line and I found the 8hp70's that bolt up are from active hybrid. The 8hp75 claims were utter nonsense. I could not find any with the correct bell housing.


Obv, this just bolts to the N54/N55, but not to subframe or anything. That would all need to be made, but it's fairly trivial.

There are also 8hp45s that bolt up to N54/N55, but the price is similar, so I don't think it's worth even exploring that.

These would require the GCU, as the TCU for these is not compatible. That said, the 8hp70 can hold a lot of power. Still, I think the 6hp28 is plenty fine, and your kit seems to tick the right boxes. I'd go that route instead of the 8hp70, especially with all of the readily available billet and clutch upgrades.

There are some bump box / trans brake kits for 6r80 that may be worth looking into, but I'm not sure if they interface with the tcu or the solenoids directly.
 

GuruAutowerks

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So it was the active hybrid transmission the entire time he was talking about? I almost mentioned that exact transmission in my previous post but had no data to backup if that would actually work since it was an active hybrid variant. I was operating under the belief there was a gas non hybrid version that he was using. If he used the active hybrid that definitely does help confirm something I wanted to tinker with later this year.

As for the 6R80 trans brake kit thats a good question and one that I will have to checkout to confirm 100%. The Ford solenoids are controlled outside the transmission case unlike the BMW ZF variants which have the TCU inside the case which you probably already know. I will be tackling it due time and intend to spread information to interested parties.

I appreciate the insight and kinda words regarding our product... I like to hear feedback so I know we are on the right track!
 

nyt

Sergeant
Sep 15, 2019
331
1
289
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Ride
2010 335xi
So it was the active hybrid transmission the entire time he was talking about? I almost mentioned that exact transmission in my previous post but had no data to backup if that would actually work since it was an active hybrid variant. I was operating under the belief there was a gas non hybrid version that he was using. If he used the active hybrid that definitely does help confirm something I wanted to tinker with later this year.

As for the 6R80 trans brake kit thats a good question and one that I will have to checkout to confirm 100%. The Ford solenoids are controlled outside the transmission case unlike the BMW ZF variants which have the TCU inside the case which you probably already know. I will be tackling it due time and intend to spread information to interested parties.

I appreciate the insight and kinda words regarding our product... I like to hear feedback so I know we are on the right track!

Who are you referring to as 'he'? There was someone claiming to have an 8hp75 in their car with no adapter, swearing up and down, but never backed it up, is that who you're referring to?

Ah, I didn't know the 6r80 solenoids were controlled externally, that would make it a lot easier. To get trans brake working without an external TCU, probably need to get some wires direct to the solenoids.