3.8 L L32 SC V6

The L32 is a supercharged Series III. Introduced in 2004, the main differences between the L67 and the L32 are the L32's electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger, the Generation 5 M90. Power output is up to 260 hp (194 kW) in the Grand Prix GTP. As with the L67, premium fuel (91 octane or higher) is required, but the PCM can compensate for lower octane fuel at the cost of lower power output. The use of below 87 octane fuel can cause detonation that eventually leads to engine damage and failure.