2004.5 - 2005 GM 6.6L LLY Duramax | Allison Transmission Tuning by PPEI VT1100C2 Shadow What's new with MPVI3

What's new with MPVI3

Our Stage 2A Power Package features a customizable clutch kit that cools your belt down empowering you to bring the heat as much as you want

Gloss black paint and just the right amount of micro-machined highlights

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

We've taken traditional and made it exceptional

2004.5 - 2005 GM 6.6L LLY Duramax | Allison Transmission Tuning by PPEI VT1100C2 Shadow What's new with MPVI3Extend 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