http://www.evoms.com/vw%20diverter%20valve.htm
Awesome Billet Evolution Motorsports Bypass Valve

My cousin had two of these on his modified S4 for about five months until he recently sold the car. The parts are very new and work great.

I replaced one for my old bosche bypass valve on my supercharger and it was night and day. I had tune extensively, increasing and decreasing my timing, to get rid of any surging that I was getting at low rpm (~2400rpm) and at constant throttle. I deminished the surge with the timing table but still have a tiny bit. When, I put this bypass valve in, all the remaining surge went away! I put the old one back in or a HKS blow off valve and the surge came right back.

This unit looks solid, flows more, and seals better during boost. The EVO valve comes with a LIFETIME Warranty

He is selling the second one for $95 shipped.

thanks

 

DIBS IM IN THE BAY AREA..WOULD THIS WORK ON MY d1?

 

Yup, this will be a very good replacement of your stock bypass valve and will just fit right in.

I will be in Vallejo on Saturday and can meet you there. The part is in SJ for now. If I don't have to ship it, you can have it for $90.

Cheers

--Hugh

 

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