I'm not trying to be an ass hole but do you have a tuner or a shop that you work with? They may be able to get you dialed in. The car may be tuned not to boost over 20 PSI.
Going to be brutally honest here.04 sti, Garrett 3076r rotated turbo, 860cc injectors, forged internals, turboback exhaust, hks bov, tial wastegate, with a manual boost controller. bought the car a few months ago and just now started toying around with the boost controller and i cant get it to boost over 20psi. Accesport tells me its tuned for 18.5 psi and when i got it it was turned down to 15psi. i turned it up a few clicks and was reading 20psi for a few weeks, and i decided i wanted to try a little more, but it wont go over 20psi no matter what i do with the boost controller and i want to try some bigger boost since the car is built for it ..im still new to the turbo game so please dont flame me if i asked something dumb but i still dont know how all this stuff works.
your pushing all that through the stock downpipe?
nope.04 sti, Garrett 3076r rotated turbo, 860cc injectors, forged internals, turboback exhaust,