MBRP Performance Exhaust Products: Want more pulling power for your truck without the noise? How about an easy install using common hand tools that can be accomplished in one hour? You need the MBRPinc POWERTUBE. Each POWERTUBE is CNC built to tight tolerances, so each unit performs like it was designed. The MBRPinc POWERTUBE not only creates torque like there's no tomorrow, but tests show it can help improve fuel economy as well.