2004.5-2007 Cummins 63mm FMW Holset Cheetah Turbocharger Fleece Performance Exhaust Brakes and Parts " most likely it has to

most likely it has to do with your old injection pump

5-layer progressive cotton media for maximum flow and filtration

870 CFM / 450 HP

1100 torque Price includes applicable core fee

Smooth transition bends allow for low turbulence

2004.5-2007 Cummins 63mm FMW Holset Cheetah Turbocharger Fleece Performance Exhaust Brakes and Parts " most likely it has toFleece Performance Cheetah Turbochargers set the industry standard for power, quality, and reliability. The Cheetah series does not require an expensive kit, just bolt it on and go. Designed as a stock appearing, drop in replacement turbocharger capable of much more! With our exclusive FMW compressor wheel and inconel turbine wheel technology, you'll enjoy smooth throttle response, big top end power, and that classic Cheetah Turbocharger sound.