Review - PSP Hi-Flow Outlets

NoQuarter

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Nov 24, 2017
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Indiana, USA
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I was the winner of the Pinnacle Specialty Performance (PSP) raffle. @Dusty Waterfall was giving away a really nice intercooler for the 3 series but I wanted to replace my silicone turbo outlet pipe with Dusty's nice aluminum one so we agreed to switch to that.

I knew my silicone pipe wasn't going to last much longer and while waiting to get my hands on the outlet, it finally let go on me See my post about that

It arrived in a box that got pretty beat up but each item was individually bubble wrapped so no problems there. Can't tell in the photo but the white squares are a couple nice PSP decals.

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Package contents: Mine included an extra o-ring but I assume this was a packaging mistake.
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This photo shows where the pipe is made with a small indentation to make more room for the v-band clamp to be installed.
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A couple pics of the inside of the merge
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Installation to follow....
 
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NoQuarter

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After I removed my silicone pipe and the adapter, I compared the size of the opening from the turbo with the PSP pipe. On the left is the adapter that inserts into the turbo outlet opening. You can see that it would also fit inside the PSP opening. The adapter is sealed via the o-ring inside the turbo opening while the PSP pipe is sealed on the face of it.

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On the left is the small opening of the silicone adapter and the right is the opening of the PSP aluminum pipe.
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NoQuarter

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Installation Notes
Remember... this is a Z4 not a 3 series
  • The o-rings will not stay in the groove by themselves. They will fall out as you work getting the pipe into position and fight with the v-band clamp. Coat the o-ring with some grease so that it sticks to the grove and stays in place.
  • I started with the rear pipe but found it very difficult to hold the pipe in position while also trying to get the v-band clamp into place. I ended up doing the front first then using the silicone adapter to hold the rear pipe in position for me while fighting that F%$Ging clamp.


This shows the front pipe in position. Note the orientation of the clamp and the bolt. That clamp/bolt is very close to the pipe that passes in front and there is no way to get onto the bolt unless it is clocked this way.
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This is looking down from the coolant tank. The is no clearance between the aluminum pipe and the outlet of the tank. Unbolting the tank and raising it up helps get the pipe into position then the tank can be bolted back down.
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pic of the final installation
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This pic shows the clearance to the exhaust manifold.
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fmorelli

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Aug 11, 2017
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Rcboosted2007

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Jan 28, 2018
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Parts unknown
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07 335i
I was the winner of the Pinnacle Specialty Performance (PSP) raffle. @Dusty Waterfall was giving away a really nice intercooler for the 3 series but I wanted to replace my silicone turbo outlet pipe with Dusty's nice aluminum one so we agreed to switch to that.

I knew my silicone pipe wasn't going to last much longer and while waiting to get my hands on the outlet, it finally let go on me See my post about that

It arrived in a box that got pretty beat up but each item was individually bubble wrapped so no problems there. Can't tell in the photo but the white squares are a couple nice PSP decals.

View attachment 13390
View attachment 13391
Package contents: Mine included an extra o-ring but I assume this was a packaging mistake.
View attachment 13392
This photo shows where the pipe is made with a small indentation to make more room for the v-band clamp to be installed.
View attachment 13393

View attachment 13394
A couple pics of the inside of the merge
View attachment 13395 View attachment 13396 View attachment 13397
Installation to follow....
This photo shows the outlet side of the pipe.im not sure if you looked down the inlet side. My set was fit roughly and not smooth at all
 

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Lieutenant
Dec 7, 2016
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St. Louis, MO USA
www.rbturbo.com
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'08 335i, '14 M6, '15 Tundra
After I removed my silicone pipe and the adapter, I compared the size of the opening from the turbo with the PSP pipe. On the left is the adapter that inserts into the turbo outlet opening. You can see that it would also fit inside the PSP opening. The adapter is sealed via the o-ring inside the turbo opening while the PSP pipe is sealed on the face of it.

View attachment 13398

On the left is the small opening of the silicone adapter and the right is the opening of the PSP aluminum pipe.
View attachment 13399

View attachment 13400

This adapter on the left is actually a transitional adapter, it may look TINY on the small side and that is because it IS, PURPOSEFULLY, to match the actual compressor housing outlet as the airflow exits the turbo. Having ID steps larger (or worse yet smaller!) is not really ideal. Transitional adapters are a good thing, last we heard there was a transitional adapter on the PSP but that doesn't seem to be the case here.

Rob
 

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Lieutenant
Dec 7, 2016
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If its hard on a LHD i cant even imagine what itll be like on a RHD.

All that is needed is 1.5"-1.75" primary tubing for these turbos- especially with a great merger. If anyone gets into the RHD outlet market pass that along so that you get all the performance benefits and most ideal fitment.

We've said it a bazillion times but will repeat once again. If you are LHD making south of 550whp, just keep your OEM outlets. If you are RHD and making north of 450rwhp you'd want to start considering doing outlets. If you are running a large compressor housing (ie. Native TD04 housings such as equipped on Super RB Evo's or MMP's) having a larger outlet would be more ideal to match the housing.

Rob
 

langsbr

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Apr 5, 2017
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It only makes sense. He sells outlets so why wouldn't he jump in and talk bad about a competitor.
 

iminhell1

Sergeant
Jun 17, 2018
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Those clamps,
Find that engineer and ring his fucking neck. I need to heat wrap my inlets and that clamp is the only reason I'm not in any hurry to do this. I fought with the front one for an honest 2hours straight before it just fell into place for no reason. I too did rear first then front. After which I thought maybe the front is first and the rear is last?
That is the absolute worse thing I've come across in this car so far. Everything else is easy by comparison.
 
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langsbr

Captain
Apr 5, 2017
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You know the whole, "the enemy of my enemy is my friend" saying? Yeah you're only friends at that particular moment, plus Rob was adamant that 2" outlets are not needed.
 
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Kommodore

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Nov 5, 2016
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Cactus Farm
Same for me. That front clamp was a miserable fucking experience.

Those clamps,
Find that engineer and ring his fucking neck. I need to heat wrap my inlets and that clamp is the only reason I'm not in any hurry to do this. I fought with the front one for an honest 2hours straight before it just fell into place for no reason. I too did rear first then front. After which I thought maybe the front is first and the rear is last?
That is the absolute worse thing I've come across in this car so far. Everything else is easy by comparison.
 
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NoQuarter

Major
Nov 24, 2017
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Indiana, USA
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Z4 35is, 535xi, X5 35i
I have the VRSF and it bolted right up but only because I already have the things you describe in place to connect up to the MMP outlet that I removed.
 

NoQuarter

Major
Nov 24, 2017
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Indiana, USA
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Z4 35is, 535xi, X5 35i
The rear clamp.... After I fought so long to figure out the technique and get it installed I called it quits for the night.

Came back the next day to button everything up. Went underneath to attach the underbody panel and saw something I didn't want to see.

The oring was on the ground!
 
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