get a bigger bypass or will i be ok?


New Member
Mar 20, 2004
hey quick question for yall out there...i have a P1SC and im going to be running prolly around 14 psi along with stage 2.5 p&p heads and new cams. when i step up this boost will the factory ati bypass valve be ok, or will i have to go to something like the vortech mini race bypass? thanks for the help!! :shrug:
  • Sponsors (?)

It's a toss up. Some get by fine with the stock valve while others have to upgrade. I used to have a P1SC and ran a vortech mondo vented to atmosphere with it although I found out later that it was unnecessary. One loud mother scratcher too.