RENNtech Intermediate ECU Upgrade | C216 | CL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-14 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 ECU+ Upgrade | Up to

ECU+ Upgrade | Up to 584 HP / 642 LB-FT | Gains: up to +100 HP & +102 LB-FT

454 lb-ft @ 3

Our carbon fiber front splitter integrates flawlessly with the original lines of the vehicle while boosting the overall testosterone level of the sporty SLS

Our kit comes complete with high flow performance filter inserts and anodized aluminum MAF sensor retaining clips

C43 AMG Coupe (C205 | M276 | 3

RENNtech Intermediate ECU Upgrade | C216 | CL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-14 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 ECU+ Upgrade | Up toIntermediate ECU Upgrade Up to 638HP 695TQ Gains: +75HP +101TQ RENNtech M157 Biturbo ECU Upgrades are TV approved! Our intermediate level ECU upgrade for the Mercedes M157 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