Pay in 4 interest-free payments of $39.53 Learn more
Ships within 48 hours · Estimated delivery Oct 12 - Oct 17
durable CP4
Outflows Stock Intake by 39
The stock GM CP3 is only capable of flowing fuel up to 3000 rpm and begins to fall off
improving fuel economy
2001 - 2004 GM 6.6L LB7 Duramax | Allison Transmission Tuning by PPEI durable CP4CARB EO Pending Extend 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
