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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Just got PWM kit, need to upgrade diverter valve?



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      01-11-2012, 11:23 PM   #1
werke-t
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Just got PWM kit, need to upgrade diverter valve?

As title says I got a great deal on an used PWM kit, going to be running vishnu DCI, HPF FMIC, PWM, and Rev 2.5 for now. Downpipes will follow after I get sick of the power

Do i need to upgrade my diverter valve? or BOV setup? To run this setup at its full potential?

Thanks Travis
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      01-11-2012, 11:34 PM   #2
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Quote:
Originally Posted by werke-t View Post
As title says I got a great deal on an used PWM kit, going to be running vishnu DCI, HPF FMIC, PWM, and Rev 2.5 for now. Downpipes will follow after I get sick of the power

Do i need to upgrade my diverter valve? or BOV setup? To run this setup at its full potential?

Thanks Travis
no, stock DVs are perfectly fine.
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      01-12-2012, 07:43 AM   #3
werke-t
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Quote:
Originally Posted by themyst View Post
no, stock DVs are perfectly fine.
Ok good, its just for some reason I remember reading Shiv say that once you go Meth, the boost gets pumped up to the point the stock DV cant hold the boost.

PWM is going to be here beginning of next week, so I have some time to study the DIY install, doesn't look like its going to be the easiest thing in the world.

Thanks for the help,
Travis
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      01-12-2012, 09:48 AM   #4
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just get some forge DV's to be safe, then you don't have to think about it
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      01-12-2012, 10:45 AM   #5
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Here is a log of the PWM kit with stock diverter valves running 17 psi just fine.

I have forge diverter valves but had removed them a while back and the stock ones seem to hold boost quite well.

But the forge have stiffer springs, so you will have a crispser throttle feel with them. The only downside to this is that you get a bit higher backpressure to the turbos when you close down the throttle plate - before the valves crack open.
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      01-12-2012, 10:51 AM   #6
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Quote:
Originally Posted by werke-t View Post
Ok good, its just for some reason I remember reading Shiv say that once you go Meth, the boost gets pumped up to the point the stock DV cant hold the boost.

PWM is going to be here beginning of next week, so I have some time to study the DIY install, doesn't look like its going to be the easiest thing in the world.

Thanks for the help,
Travis
Lol, compared to diying a turbo swap on this car meth kits are a walk in the park!

FYI I've pushed almost 21 psi through the stock DVs no problem. Unless they're damaged I don't see any need for concern.
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      01-12-2012, 11:08 AM   #7
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Quote:
Originally Posted by themyst View Post
Lol, compared to diying a turbo swap on this car meth kits are a walk in the park!

FYI I've pushed almost 21 psi through the stock DVs no problem. Unless they're damaged I don't see any need for concern.
21 psi Race gas and meth I'm assuming?
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      01-12-2012, 11:19 AM   #8
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Nice to see that the stock DV car hold some nice boost.. I always keep holding off getting a aftermarket chagepipe as i thought i would be begin leaking boost..
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