[s-cars] Bypass Valves and Pressure Losses (Uh, Pizzo??)

[Lewis, Gary M]

So I went and bought the TurboXS type 25 bypass valve (thanks again JP), and slapped it in yesterday.  Literature states it is adjustable and good to around 25 psi.  It also said that if you are running it as a blow-off valve, put all 6 washers in.  I'm not using it as a blow-off valve, but I figured WTF, I'm running 26 psi, the worse thing that could happen is that the valve won't crack at idle, or I'd get an enormous spike and snap a boost hose/IC.

It looks really cool...

So, 6 washers later, my idle is identical, the car boosts 200 rpm SOONER, and there are no boost spikes between shifts.  I speculate that the 710n valve was cracking at higher boost levels, creating a pressure loss.

Did I mention it looks cool?

I really want 26 psi at 3,000 rpm. (with the turbo I got, btw...)

Everything seems like a total success, I just worry that 6 washers is overkill.  Pizzo, what did you use??

Next pressure loss victim:  FMIC

And later, following the visionary footsteps of Hap and MLP, we revisit the RAIS...

Gary Lewis

1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2 Exhaust Manifold, RS2 Injectors, Custom Turbo (K26 Turbine, Factory K26 Cold side (Audi Works '999' P/N) with 50mm intake and custom Innovative Turbo compressor wheel), TurboXS Type 25 Bypass Valve, Bilsteins, Eibachs, Big Reds, Spec II Clutch.