2004.5 - 2005 GM 6.6L LLY Duramax | Allison Transmission Tuning by PPEI VT1100C2 Shadow We've taken traditional and made

We've taken traditional and made it exceptional

Whether you’re thinking monster tires

Nissan 10-18 Micra (HR16DE) (2)

So whether you get a cast aluminum or USA-made billet aluminum housing

2004.5 - 2005 GM 6.6L LLY Duramax | Allison Transmission Tuning by PPEI VT1100C2 Shadow We've taken traditional and madeExtend your transmission life and increase your fuel economy with PPEI Transmission tuning! A MUST for tuned trucks with additional torque. The refined shift points get rid of the low rpm Lazy feel these trucks have that force the driver to stab the throttle for a downshift not cool and a fuel economy killer! For vehicles with larger turbochargers, ppei transmission tuning is a must to get the engine back into a rpm range to match the torque curve of