Upgrade your stock Cobalt with our stage kit! It provides gains of about 40 whp with a 2.8" pulley.
The foundation of this kit is our computer tune. We disable torque management, which stops the computer from limiting timing. We set the fueling for the injectors and fuel type you will be using. We install our base tune timing maps, they are safe but make more power than stock. We limit boost in first gear till 6k rpm, this helps with traction off the line. We also raise your speed and rev limiters.
2.9" pulley requires no other modifications.
2.8" pulley should have an additional heat exchanger or dual pass end plate.
2.7" pulley should have an additional heat exchanger or dual pass plus a header and downpipe.
2.6" pulley should have dual pass, heat exchanger, header and downpipe, and our camshafts.