RENNtech ECU HHT Upgrade for GL 550 X164 | 402 HP / 405 LB-FT audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 353 LB-FT @ 2800 RPM

353 LB-FT @ 2800 RPM

RENNtech throttle body assemblies were designed and engineered in house and a re a bolt on component requiring no modifications to the intake manifold

Fuel System Upgrade

Rated by RENNtech:               500 HP @ 5

RPM Tuned: 672 HP | 696 LB-FT

RENNtech ECU HHT Upgrade for GL 550 X164 | 402 HP / 405 LB-FT audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 353 LB-FT @ 2800 RPMRENNtech ECU HHT Upgrade for 164 GL 550. Up to 402HP, 405LB FT. Gains: +20HP & 14LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software