You could only have the Cobalt SS Supercharged in a coupe. A roots-type Eaton supercharger pushing out 12 psi of boost gave the Ecotech engine 205 horsepower.

According to Chevy, you'll see almost 20psi of maximum boost on the A-pillar-mounted boost gauge. Launch control is standard on the Cobalt SS, as is a drag-style 'no-lift shift' feature.

We tweak the ECU on this 2009 Chevy Cobalt SS and get some pretty impressive horsepower gain! Only at www.gmhightechperformance.com, the official site for GM High-Tech Performance Magazine.