My car stalls when the rpms are high at about like 2500 or 3000 and i push the clutch to drop the rpms to idle. ive noticed this ever since i changed from my stock intercooler pipes to the cooleeze hardpipe kit. when i did this i also changed from the stock bypass valve to a turbo xs type-hrfl blow off valve. Someone told me that i might have an issue woth the blow off valve that i bought and that i should try a different one. He also said that it could also be my vacuum lines. i have changed out all of my vacuum lines and the problem is still there. Could it be the blow off valve like that guy told me and if it is what blow off valve could i use to take care of this problem? any suggestions.