most of you know about my p.o.s. gst i got the lifter noise to go away turns out it wasnt a lifter at all just a bolt backed off tightened it adn now is fine, car holds boost upto 21psi then loses a slight bit of power feels like a small boost leak somewhere but cant find it so i tried lowering the boost to find no controllers what so ever so im guessing a larger spring in teh wastegate? any have any suggestion on lowering it since its to high for my mods anyhow

injen intake
upgraded smic (fmic on not plumbed yet)
big16g ext wasted
ported polished head
oe rebuild on block .040 over (told about 15000 miles not sure tho)
3" greddy evo 2 catback
3"apexi dp cat eliminated
wally 255
greddy type s bov
hks turbo timer
boost n a/f gauges

stock everything else that i can think of

any suggestions guys? it really annoying getting to 21 n it backfires n blows a puff of black smoke everywhere so think u cant see through it lol

 

How are you testing the system for boost leaks? Get your intercooler on and report back.

 

+1

 

update, fixed thanks guys running 15 psi for now till im rich enough to be able to afford the car lol