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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 Modified Peformance:

SKU: 5945593279

4.6
USD1120.00 USD1166.00

Pay in 4 interest-free payments of $280.00 Learn more

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

Description

Modified Peformance:

the driver can fully control the exhaust valves

These extractors reduce drag by pulling air flow from the top surface of the wing

High Efficiency Dual-Intercooler Pump and Stainless Steel Sport Muffler

Quick and easy

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 Modified Peformance:ECU 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

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy

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