Quote Originally Posted by froyotlbw88 View Post
That's in the event that he doesn't want to run high psi levels. But when he wants to run his Garrett turbo to 16 psi or higher, he's not gonna want higher compression pistons.
It's really up to the tuner, and what he wants out of the car. I could have sworn he said he just wanted 300 whp in the OP. 10:1 should be just fine for that without any detonation issues. ITR's and GSR's run higher compressions with that, and 16 psi is a cakewalk. The slightly higher compression will give him a much better throttle response out of boost, and make him more power at lower psi.