RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605LB-FT | 4.7L BiTurbo | M278 Engine audi-s3--8p---2006-2012--2-0l-tfsi-esr5566206 Power gains are calculated with

Power gains are calculated with stock numbers measured by RENNtech

RENNtech Carbon Fiber FLat Top Air Box

RENNtech Performance Series | Forged Wheels | Set of 2 Front and 2 Rear | Front: 23" x 10

C400 (Airmatic Optional)

The customized crossbar is made out of high-performance carbon fiber to minimize flexing between the vehicles strut towers

RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605LB-FT | 4.7L BiTurbo | M278 Engine audi-s3--8p---2006-2012--2-0l-tfsi-esr5566206 Power gains are calculated withECU Upgrade 480HP 605LB FT Gains: +32HP +67LB FT Our intermediate level ECU upgrade for the Mercedes M278 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas and countries with extreme altitudes, temperatures or