Not everybody can get away with 23psi on 93 octane, as that would require an excellent tune, and J&S safeguard. I would recommend 10-12 psi to be safe on 93 octane.
I've been running 13psi on my stock ZETEC block with SVT internals dropped in. But my CR is different i have around 8.9:1 CR, so that changes the ball game
been running 10 for a while, remember it has a lot to do with the efficenciy of the turbo as well. i will be running 15 regularly as soon as i can get my initake mani issue fixed
A forum community dedicated to Ford Focus owners and enthusiasts. Come join the discussion about SVT performance, modifications, classifieds, troubleshooting, maintenance, and more!