I have read that somewhere too.

 

I also noticed some other posts on here talking about turbo selections. Just go with a T3/T4 with like a .63-.81 A/R size. Will make your power goals and still retain a good powerband. I promise, you won't regret it, unless your looking for more than 500whp, which I wouldn't recommend anyways on the street.

 

i guess the best idea would be to ask hahn what pistons to go with....due to hes doing the tuning and what not.....wont the compression level diff.s affect the specific turbo tuning?

*1000th post....sorry i had to*

 

Yes... if you're going with a Hahn kit. CR definitely affects tuning.

You could get a Hahn kit and go with custom pistons, but you'd have to have someone tune it then... which would probably void any warranty Hahn was offering on the kit. I would foresee Hahn offering pistons as part of a Stage upgrade. Which would mean that in order to upgrade and keep your warranty on the kit you'd have to fork out a wad of cash just to get the full Stage upgrade with the pistons, tuning, and whatever else. It's a good marketing strategy... and something that kit purchasers overlook.

 

ill send him an email and see what he has to say.....

 

Note: Don't just get pistons...get stronger rods as well. Power not only effects your pistons but the stress on the connecting rods as well.

 

yea thats what i plan to do....figure i might as well do it while im at it....no good to do one and not the other....I emailed bill and i should hopefully hear back from him soon...unless SEMA keeps him away....

 

Good luck.

 

well it looks like I"m trading the monte for a truck... so cobalt will be coming apart again for the winter doin the motor over before I break anything