Gain 10 Horses And 15 Pound-Feet In Your Chevy Sonic With GM's Turbo Stage Kit ... - GM Authority (blog)

If you happen to be the proud owner of a Chevy Sonic and are also looking to augment your zippy subcompact with a palpable performance upgrade, then GM’s Turbo Stage Kit with High Flow Exhaust should be on your short list. Designed and engineered by GM/ Chevrolet Performance, the bundle of the low-restriction exhaust and appropriate engine calibration software adds 10 horsepower and 15 pound-feet over the standard setup, for a total of up to 148 horsepower and 163... It’d be awesome if it worked for the Cruze too, you’d think it would since it’s the same exact powertrain, and if anything there would be more room for the stuff on the Cruze, but it’s GM, they can’t even design their infotainment systems to... I’m also wondering what GM dealerships will charge to do just the software update. My Cruze is out of the bumper to bumper, and they wanted to charge me $150 to hook my car up to there system to check for a MyLink update, and $150 to apply the MyLink update, if there was even one available. If there was none available, I’d still be out $150 just for wanting to check if an update was available. lol Good to see that GM is releasing stuff like this though, something to make up for the lack of performance variants for their passenger cars, which is a nice gesture. I wish GM would more Turbo Upgrade kits like the Cobalt SS/ HHR SS and Solstice kit. This added around 55 HP and boosted the torque from 250-260 to 315-340 foot pounds. Source: gmauthority.com