Remove airflow restrictions with complete intake and exhaust system more MPG and optimum engine efficiency. Here's a major dose of new RV power without the new RV price! PowerPack delivers more horsepower and torque to your V-10. Rockets you up grades faster and chops time off your 0-60 mph time. With PowerPack's engineered intake and exhaust upgrades, your rig will pass and merge a whole lot easier and more safely - and you'll get more MPG, too! Banks' streamlined, stainless steel TorqueTubes are the industry's only parallel 5-tube exhaust manifolds for RVs. Unlike competitors who add a separate tube length to a 4-tube formation, Banks integrates five tuned-length tubes into a design that allows rotational firing of the cylinders through the exhaust, minimizing backpressure and maximizing torque. The thick, 5/8 inch flanges never warp or leak.