First of all I am new to this forum and just purchased a 2007 GP GT 3.8 Super Charged. I am looking for some mod, idea's that will aid in performance. I am not ready to jump right in and do a exhaust, and heads etc.. I am looking for ideas that are more of a bolt on, or just not extream right off the bat.

I also want to insure that I do not pose any issue with my GM warranty.
I am interested in a Cold air intake, but do not know which is the best for money and one that will perform well in all the Minnesota seasons.

I don't really know what other items would be a go start, I am looking to drop up to 500.00.

So if your motor heads can throw some ideas my way I would appreciate it.

thanks ........