RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 mercedes-benz-e-class-sedan--212---2014-2016--e-400-biturbo-esr2068372 RENNtech headers are constructed of

RENNtech headers are constructed of the highest quality T-304 stainless steel and are ceramic coated to further reduce latent heat in the engine compartment as well as combat against thermal stress

order lead times and new vehicle developments have reached optimal efficiency

Available for vehicles equipped with the Mercedes Airmatic and Magic Body Control Suspension

Range Rover Sport (L320) 2009 - 2013

0" Display to work with RENNtech Digital Lowering Module

RENNtech ECU Upgrade | R231 | SL 550 | 500HP / 625LB-FT | 4.7L V8 BiTurbo | M278 mercedes-benz-e-class-sedan--212---2014-2016--e-400-biturbo-esr2068372 RENNtech headers are constructed ofECU Upgrade 500HP 625LB FT Gains: +26HP +59LB FT RENNtech tuning products are certified to meet CARB standards in all 50 States. 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