IE Upgraded HPFP Internal Kit - Audi S4/S5/SQ5/RS4/RS5 B9

The IE HPFP Internal Kit upgrades the high pressure fuel pump in your Audi B9 3.0T or 2.9T engine with the largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and our Stage 1/2 Plus ECU tunes. Manufactured with top-quality components and an industry-leading QC process to ensure extreme reliability. Increase your fueling overhead and enjoy worry-free HPFP operation for your 6-cylinder turbocharged engine. Features: Required for E85 ECU tune 38.58% stroke volume increase 11.68mm piston diameter Low friction DLC coated pin Nitrided cylinder for increased hardness and wear resistance Ultra lightweight and high strength titanium retainer Engineered, designed, & manufactured in the USA