Still in import mode dude...these cars dont have chips. We have retuned PCM's (powertrain control modules) Look at ZZP, Intense, Wbodystore, ect for a tune, or buy some tuning software. a good place to start would be to get headers, intake, and then a 3.4 pulley with a tune at the same time. Youd be pretty happy to start there.
The best tune would be a dyno or street tune, but if thats not available ordering one from a vendor is ok.