S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Blow off valve...

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Old 05-06-2001, 01:33 AM
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Default Blow off valve...

This is probably beaten to death, but my friend is trying to convince me that a blow off valve would work on our cars. I've also heard that without fuel considerations (through reprogramming the ECU, etc.), the car won't run properly. Needless to say, I'm somewhat skeptical... But if it works, I think it would be kinda nifty, and I'm sure there would be some interest. =) So, can anyone tell me for certain, if this idea of just making an adapter and putting on blow off valves would work?

Also, if someone is in the Milpitas/San Jose area, TurboXS would be interested in looking at your S4 for the feasibility of the project. They seem interested in trying it out... Just drop me an e-mail.

Thanks,
-Mike-
Old 05-06-2001, 06:15 AM
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Default If you're looking for the sound effect, vent your BPV outlet port into the engine compartment ....

.... and plug the unused hose stub. There shouldn't be any noticeable change in performance.
Old 05-06-2001, 11:10 AM
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Default Done that, neat sound for 4 miles, then limp home mode.

People on the board said that loss of already metered air discombobulates the ECU (my technical understanding of it).
Old 05-06-2001, 01:20 PM
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Default don't bother man, it's a cool sound but not

the smartest mod. Our cars aren't designed for an atmospheric blow off valve.
Old 05-06-2001, 04:39 PM
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You're absolutely right. I withdraw my suggestion. :-)
Old 05-07-2001, 11:00 AM
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Default

I've done exactly what you described so drop me a line if interested...it works great using BLITZ!
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