This is my '07 G5 GT, I've installed a few mods so far but still have many planned.
Car came pretty well loaded stock, awesome stereo with a 10'' Pioneer sub. Only option installed was the sunroof. Sitting on stock 17's wrapped in Pirelli's..hoping to change those soon, 205's are terrible for traction..
MODS
K&N Typhoon Ram Air Intake Kit (Dyno proven to add up to 15.94WHP)
Dyno chart included with kit from a 2.4L SS Cobalt which is the exact same car minus some cosmetic changes. 149.59WHP stock, 165.53WHP w/ intake installed.
GMPP "Performance" Cat-back exhaust w/ 4'' angle cut tip
Cobalt Addiction 4-1 Stainless Steel Header
Figure Custom Grilles and Halo Projector Headlights
Combined current mods should net between 15-20WHP putting the car somewhere around 170WHP. A performance tune will definitely be the next mod, eventually follwed by suspension work, upgraded brakes and drivetrain components and I'll be done messing with this one. I think 185-190WHP (215-220ish at the crank) all motor is a reasonable goal in the end. Dyno and 1/4 mile numbers hopefully soon once it cools down.
