and again askin how many psi ur motor can handel doesnt do anything you coulbd be useing a gtk and push 5psi and probly pop your head studs or uses a ebay turbo 15 psi and pop it lil more info its really on how much power your stock lsv can handel not on how much boost you can push

if it takes you 20 psi to hit 220whp or even 5 psi to hit 220 psi its all on the setup but lsvtec i seen 300whp on some cars as a dd all in the tune