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A substantial increase is detected over a very wide rpm range
The RENNtech Sport Muffler System for the W205 - C63 AMG Sedan is developed with out the Electronic Valve System option
AMG M177 -engines (2021+) GLE 63 | GLS 63
5" Weight: Construction: 1-piece Forged Tire Size: 255/30-20
RENNtech ECU Upgrade | X166 | GLS 550 | 500HP / 605LB-FT | 4.7L V8 BiTurbo | M278 mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 A substantial increase is detectedECU Upgrade 500HP 605LB FT Gains: +26HP +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
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US$ 99.99