Originally Posted by Seb@SZ

Blake, at just under 10 psi we are at 545 rwhp on your car. This is pushing it on CA 91 octane fuel. As your tuner, I am comfortable with a 8 psi and 500 whp. It gives us some wiggle room and is safer for the street. Think about the inconsistencies in octane level from station to station and hot weather. If you want to turn the boost up past 10 psi we can run 100 octane fuel\tune. 575 whp is fantastic at just 10 psi on this kit! We can also talk about converting the Z to ethanol.