Need help with piston info.

[DBo]

ok im gettin new pistons and i have a choice of gettin 8.5:1 or 9:1. I know that stock is 8.5:1 but itll have more lag in the low end compared to 9:1. also i hear that if i run 9:1 pistons i wouldnt be able to boost high. im only looking to boost 12psi.

any more info on either piston(pros,cons) will help in my decision.

thanks

[240life]

I would recomend a tune if you are going to be running that boost on 9:5:1 compression.... I use 8:5:1 .20 over bore and the power is pretty instant

[Hijacker]

Between 8.5:1 and 9:1 you won't see a major difference between low end torque on these motors. Nor will you see a boost ceiling on the top end. So long as you have a good fuel tune, you should be good to go.

[DBo]

ok cause i was leanin abit toward the 9:1 pistons. would it be alright to run it normal(stock boost, injectors) durin break in period?

im gettin a tune as soon i break it. should be by end of december