Stage 3 kit consists of a smaller, supercharger pulley, a 2‑pass intercooler end plate and a customizable replacement ECU. The Stage 3 ECU allows for the use of a 50‑shot of nitrous, 100 octane fuel and an adjustable redline from 6,750 to 8,000 rpm. Stage 3 produces using 93 octane fuel, up using 100 octane fuel, and much higher power with nitrous. Stage 3 is for track use only, and to emphasize this, air conditioning is disabled with the Stage 3 ECU. Wheel hop, wheelspin, and a general lack of traction were problems frequently encountered with the supercharged Cobalt due to its front drive setup and relatively high torque. Upgraded front and rear trans and motor mounts would help to alleviate these issues. The GM Performance Division later tried to rectify these problems in the turbocharged car by providing wider, stickier tires and stronger axles. SS Turbocharged The LSJ engine did not meet emissions requirements for the 2008 model year, and General Motors' contract with Eaton had expired. The non-supercharged 2.4 L Cobalt SS also lost its Super Sport designation for the 2008 model year and was renamed "Sport", leaving no SS in production. However, in fall 2007, a more powerful Cobalt SS was announced for the second quarter of 2008. It would be equipped with the 2.0 L, turbocharged, direct injected, VVT, LNF Ecotec engine, making at 5300 rpm and at 2,000 rpm, remaining mated to the F35 5-speed manual transmission. The engine had been introduced in a rear wheel drive application for the 2007 GM Kappa platform, which includes the Saturn Sky, Pontiac Solstice, and Opel GT. Also new for the 2008 SS were SS-embroidered sport seats with suede-like UltraLux inserts, several new exterior colors, and wider forged, split-spoke wheels with P225/40R18 Continental AG tires, styled similarly to those offered for the Chevrolet Corvette C6. The car's electronics were also new, and along with greater assist in poor traction conditions, a "no-lift-shift" feature was added which allows the driver to maintain turbocharger boost during shifts to a higher gear. During a no‑lift‑shift, the driver begins the shift normally by depressing the clutch, but the accelerator pedal is held wide open while the shift is completed. Also new was "launch control", which feathers the throttle at roughly 4,800 rpm until engagement of the clutch, allowing more consistent launches in competitive situations. To activate launch control, the driver presses twice