and of course i suspect it of leaking. Intercooler piping is solid and just built, but boost spikes to 14psi and quickly drops off. If I let off the throttle after the spike, the blowoff sound is barely even audible and this is being vented to atmosphere. I know, I should run it recirculating... but I dont have that plumbed in yet and for now I want to run atmospheric.
So, I know a WRX metal bypass valve will do the trick, but I havent been able to find one (or at least when I looked I didnt look hard enough), so I looked into alternative solutions for funsies. Found a bosch bypass valve that is apparently a stock part on Porsches, and apparently the Porsche guys run them with higher boost and never upgrade the valve because it holds just fine. Also, it is for sale on turbonetics.com for $55. Just look for on that page for the product named "STREET / STRIP BYPASS VALVE"
PN 30359 $ 55.00 Great insurance for up-graded turbos and streetable high performance engines. Manufactured by Bosch this OEM quality light-weight compressor bypass valve features 1" hose connections and the highest flow capacity of any unit offered in this size.
...Then I got to thinking, what if I still didnt want to run my recirculation hose yet? Could I actually run this BPV vented back to atmosphere?
The answer is apparently yes -- if I install a 1" check valve onto the outlet of the BPV to ensure that this does not become a large vacuum leak when not pressurized / in between shifts! Interesting....Lowes has a 1" check valve in stock right down the street. VERY interesting...
Interesting enough to try? That depends on whether or not I can find a WRX metal valve for a reasonable price. Or perhaps figure out how to repair my HKS SSQV, which would be ideal.
What do you guys think?