big problem

[turboski321]

when the boost hits mi car stalls and wont rev pass 5 rpm but when i take out the intercooler the car revs good when i try to take off on 1st gear it would run good until the boost hit once it hits the car dont want to go it fells like if something was holding it back. any idea what could be the problem

 

[TomS]

Fuel-cut possibly

What's it boosting to?

 

[turboski321]

i had it to 10 psi but all of suddent it started acting up and now wont even do 5 psi without stalling the crazy thing is that the car will boost all the way to 10 psi but the car wont go no were the revs wont even go past 5rpm

 

[fastglanza]

do a diagnostic test and go from there...first prob sounds like a fuel cut since u said it works good without intercooler

what pistons does it have by chance?