Dyno Results - Single Turbo 6266 BMW 135i Makes RECORD Power?!

[Payam@BMS]

It also tells me that at this boost level on a 6266 there isn't anything left on the table for a factory long block. You'd have to improve VE to see any gains which means digging into head porting, cams, etc.

What made you come to this conclusion?

 

[suspenceful]

Nice numbers!!!!!!!! but don't get crazy with 60-130 times. You'll snap an axle if you're still on stock axles. Also that turbo still has about another 50-60whp in it at least I wouldn't push it since you're on the stock motor.

We'll see. I don't mind throwing axles at the car, I already snapped one launching from a dig on stock turbos. I want to see what the car is capable of

I hate how clean your timing looks !!!!!!

The Precision Raceworks coils are holding up great! I have the 1-step colder plugs gapped to 0.022" as well.

Those are fantastic numbers Jake! Great work

Thanks man!

I’m a big fan of yours. Love your build. And budget bimmers. You guys remind me of my 4g63 days.

Haha, thank you. The car has come a long way since I bought it 4 years ago when I was 22 years old.

Those are phenomenal numbers relative to boost and the turbo. Awesome!

That's what I thought as well. I was expecting around 700whp at 28psi but it went above and beyond. Probably had even more power in it with a little more timing and less fuel.

So I haven't spent much time reviewing JB4 logs lately, but looking over Jake's logs for the 750hp pull shows a perfect pull. The 6266 carried boost all the way to redline which means there is 0 boost leak/psi loss in the intake track. The average ignition value is also 1.5 across the pull, shows he hasn't had any fueling problems at all. He was hitting 9.5deg of ignition advance which is really good at this boost level.

What this tells me is that mechanically this is a very healthy motor and the maintenance is top notch. It also tells me that at this boost level on a 6266 there isn't anything left on the table for a factory long block. You'd have to improve VE to see any gains which means digging into head porting, cams, etc.

But, looking at the WGDC there is room on the table for more boost.... I'm super impressed.

I did a boost leak test up to 30psi a few days before going to the dyno. I actually had previously developed a leak off the coupler on the turbo compressor. Fixed the connection and now it boosts normal again! Best part is, I have a 8.7psi wastegate spring and I have no problems controlling boost or maxing it out.

I'm glad you're thinking the same way I am about the log. It looked nice and healthy! The motor looked spotless when I had the valve cover and oil pan off. No sludge, not even any dark staining. Looked brand new and performs as such!

 

[chadillac2000]

Mind sharing your method for doing the book least test? Want to do one when I upgrade my fueling here in the next few months and turn it up a bit. Would be a nice idea for a DIY video.

 

[suspenceful]

Mind sharing your method for doing the book least test? Want to do one when I upgrade my fueling here in the next few months and turn it up a bit. Would be a nice idea for a DIY video.

Yes, I actually found a really awesome solution that worked perfectly. I'll try to do a video or DIY tutorial on it soon!

 

[chadillac2000]

Yes, I actually found a really awesome solution that worked perfectly. I'll try to do a video or DIY tutorial on it soon!

Looking forward to it sir!

So these numbers were not using the OTS BMS PI maps correct? This was a custom Wedge tune?

 

[suspenceful]

Looking forward to it sir!

So these numbers were not using the OTS BMS PI maps correct? This was a custom Wedge tune?

Correct. However, I think the BMS maps will be very close in power. Very similar timing request. Ken (Wedge) tweaked a few things to give best driveability. I was happy with the OTS BEF, but wanted someone to have dedicated eyes on my logs at this power level.

 

[dyezak]

What made you come to this conclusion?

The fact that there were 0 problems in the logs. It was/is flawless. If you were seeing low ignition advance that would mean some gains could be had there. That could be either fueling (octane) limits, or just a conservative tune...but ignition advance is great.

Or if you were seeing WGDC going up and up it could indicate a small boost leak (which is super common without good maintenance). But boost is rock solid, WGDC is steady, there's no problems that would want me to look into anything at all.

Lastly the FMIC is obviously kicking ass as the IAT's were dropping through the run, and water/oil temps were rock solid.

I just see a perfect log with no obvious areas of improvement.

*time for a ported head and/or cams now

EDIT - I'm kidding about the head/cams, you're obviously on the edge of safe power for a stock long block and doing anything more from a power perspective is probably not wise.

 

[suspenceful]

The fact that there were 0 problems in the logs. It was/is flawless. If you were seeing low ignition advance that would mean some gains could be had there. That could be either fueling (octane) limits, or just a conservative tune...but ignition advance is great.

Or if you were seeing WGDC going up and up it could indicate a small boost leak (which is super common without good maintenance). But boost is rock solid, WGDC is steady, there's no problems that would want me to look into anything at all.

Lastly the FMIC is obviously kicking ass as the IAT's were dropping through the run, and water/oil temps were rock solid.

I just see a perfect log with no obvious areas of improvement.

*time for a ported head and/or cams now

EDIT - I'm kidding about the head/cams, you're obviously on the edge of safe power for a stock long block and doing anything more from a power perspective is probably not wise.

While I agree with you wholeheartedly, I think I could squeeze a little more power of this turbo if I really wanted do (and not touching the motor). However, I don't have any intentions to do that. If the Doc Race intake manifold adds power, I'll probably drop the boost a bit to keep it at this level. I love the car and the way it drives... now we'll just see how long it lasts!

 

[matthewo]

Watched your video, and it looks really good. the 650whp number at 21psi almost seems unbelievable like the dyno is reading high. I think it is safe to say for a stock motor your car is probably winning the most efficient use of boost.

I wonder how many other 3 liter engines regardless of being built or not make 650whp at 21lbs...

 

[Terry@BMS]

Logs look good but I'd change JB4 open loop to 0 to get trims up, AFR back on target (it's a bit richer than target now), and maybe add a few more HP.

 

[Schurter]

Nice numbers.
It seams to easy to make power..
A few questions

Tq down low and spool. How much tq could you pick up between 2500 - 3500rpm / get the turbo to spool faster

Any chance you'll be doing pump gas only
Dyno pull

 

[suspenceful]

Nice numbers.
It seams to easy to make power..
A few questions

Tq down low and spool. How much tq could you pick up between 2500 - 3500rpm / get the turbo to spool faster

Any chance you'll be doing pump gas only
Dyno pull

Jake @ Motiv said there is room for spool improvement. I don't know how though, I'm not a tuner. He's also not my tuner and I don't have plans to switch to a BoostBox, so it's good enough for me.

I do know that I have a 8.7psi wastegate spring installed right now. When I first installed the kit, I used a 11.3psi spring and noticed a little more lag when I swapped in the lower spring. I just wanted a lower boost ceiling, so it is what it is.

I don't have any plans to do a pump gas dyno, I never use pump gas

 

[fmorelli]

Well, and these heads are known to be pretty strangled - not sure what the return is on the port job, but I suppose it makes several things much happier. I thought I read somewhere the N54 is 165cfm kind of flow?

Anyway congrats. I wonder how you keep the power down ... and other stuff in the drivetrain has to start crying ...

Filippo

 

[ninjacoupe]

Jake @ Motiv said there is room for spool improvement. I don't know how though, I'm not a tuner. He's also not my tuner and I don't have plans to switch to a BoostBox, so it's good enough for me.

I do know that I have a 8.7psi wastegate spring installed right now. When I first installed the kit, I used a 11.3psi spring and noticed a little more lag when I swapped in the lower spring. I just wanted a lower boost ceiling, so it is what it is.

I don't have any plans to do a pump gas dyno, I never use pump gas

Looking at your logs it appears that lean spool is enabled in the BEF and the JB4 duty cycle is at 100% during spool up so I’d suspect any spool improvements they are referring to would come from mostly vanos changes and maybe some timing tweaks during spool up in the BEF.

 

[08_335i]

Looking at your logs it appears that lean spool is enabled in the BEF and the JB4 duty cycle is at 100% during spool up so I’d suspect any spool improvements they are referring to would come from mostly vanos changes and maybe some timing tweaks during spool up in the BEF.

There is definitely room for spooling better on his setup. I'm at 5300ft elevation with a 6266 and I'm hitting 19psi at 3600 rpms on pump, and 3rd gear. But I am using BB tuned by Chris. His 21psi power is absolutely dumbfounding to me though.

 

[ninjacoupe]

There is definitely room for spooling better on his setup. I'm at 5300ft elevation with a 6266 and I'm hitting 19psi at 3600 rpms on pump, and 3rd gear. But I am using BB tuned by Chris. His 21psi power is absolutely dumbfounding to me though.

Is that on a Doc Race kit as well? I agree I was just stating the gains to be found are in the BEF not the boost controller. His power numbers are awesome!

 

[suspenceful]

Well, and these heads are known to be pretty strangled - not sure what the return is on the port job, but I suppose it makes several things much happier. I thought I read somewhere the N54 is 165cfm kind of flow?

Anyway congrats. I wonder how you keep the power down ... and other stuff in the drivetrain has to start crying ...

Filippo

Yeah, I know John @DOC_Race has been porting an N54 head recently. Something I might look into later down the line.

I just ordered some 17" MT ET Street R tires to help put the power down.

Looking at your logs it appears that lean spool is enabled in the BEF and the JB4 duty cycle is at 100% during spool up so I’d suspect any spool improvements they are referring to would come from mostly vanos changes and maybe some timing tweaks during spool up in the BEF.

Yeah, if anyone has any other ideas, let me know. Otherwise Ken @WedgePerformance is tuning my backend flash. He's been great!

There is definitely room for spooling better on his setup. I'm at 5300ft elevation with a 6266 and I'm hitting 19psi at 3600 rpms on pump, and 3rd gear. But I am using BB tuned by Chris. His 21psi power is absolutely dumbfounding to me though.

Nice spool! Like I said, it used to spool better with the high WG spring. I hit 17psi at 3000RPMs in 4th with that spring and an OTS JB4 BEF. Not sure why it got more laggy, but I think the spring has something to do with it.

 

[dyezak]

Nice spool! Like I said, it used to spool better with the high WG spring. I hit 17psi at 3000RPMs in 4th with that spring and an OTS JB4 BEF. Not sure why it got more laggy, but I think the spring has something to do with it.

Put in a 29psi spring. Control the boost/power with your right foot on demand. If you don't want 750hp just don't floor it.

 

[ninjacoupe]

Nice spool! Like I said, it used to spool better with the high WG spring. I hit 17psi at 3000RPMs in 4th with that spring and an OTS JB4 BEF. Not sure why it got more laggy, but I think the spring has something to do with it.

Reflash the JB4 backend and see if it’s the gate spring. Easy enough to flash back to your wedge tune.

 

[08_335i]

Is that on a Doc Race kit as well? I agree I was just stating the gains to be found are in the BEF not the boost controller. His power numbers are awesome!

VM top mount. Yeah his numbers have me baffled honestly lol.