How much psi can you push or how much can it hold in the stock intercooler on the turbo II??

 

12 PSI is about the limit of effeciency with the stock turbo.

 

i say about 11 @80 F outside air temp cause it get staturated

i kill my engine before getting the Greddy FMIC on 15PSI on the stock TMIC and detonated

broke 5 out of 6 3mm Apex seals but all stayed in grooves and housing and plates were good but had to get new rotors..