Banks Power 04-05 GM 8.1 Mh-W20/22 (R-Exit) PowerPack SystemBanks PowerPack features a revolutionary new Ram Air intake system that delivers greater airflow and air density for more power. A pair of stainless steel, tuned length TorqueTubes exhaust manifolds provide stunning torque output when you want it. Pass, merge and climb as you please: your PowerPacked coach won't break a sweat. Achieve best gains of +70 hp and +92 lb ft torque at the rear wheels, with better fuel economy and never require high octane.