It seems every time I buy a new car I immediatly begin to moddify it. From my old 94 Monte Carlo, then my 00 Mustang, then the 02 Subaru WRX (in which i pumped the little wagon up to 280 HP in turn causing much pain to my tranny). I recently bought my 07 Grand Prix GXP and told myself i would not do anything to this car. SOOO a full cat back and short ram air latter i find myself doing the same old thing (LOL). I figured this time i would limit myself to no more than 350hp. Now this limit has turned intoa goal. I am looking for any other simple modifications to put on my LS4. I have been unable to find anything but the ram air and cat back (magnaflow). I hear rumors of a throttle body upgrade available but have been unsuccessfull in my search. Does anybody know any other simple upgrades that are out there?? I am tempted to install a Squire Turbo on it but I am terrified of it sucking up a ton of water or somthing bumping the filter and sucking up trash.

any suggetions would be loved!

Check out the latest 2010 subaru wrx (http://www.webridestv.com/2010-subaru-wrx.html) you might get some new ideas for modification.