GM Performance Parts announced yesterday the availability of two performance upgrade kits for the supercharged 2.0L Ecotec engine found in the Chevy Cobalt SS Supercharged and Saturn Ion Redline. The Stage 1 kit retails for $500 and adds 31 hp to the engine’s base 205-hp through higher-flow injectors and a new ECU calibration. The Stage 2 kit goes for $750 and includes both components of the Stage 1 kit and adds a smaller supercharger pulley and drive belt to fatten up the powerband’s midsection and increase power to 241 hp and 218 ft-lbs. of torque. Both kits require premium fuel and are available now at all GM dealerships.

[Source: GM]

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