RENNtech Intermediate ECU Upgrade for E 550 BiTurbo | C207 | 480HP/523 LB-FT | M278 Engine | MY2014-2017 mercedes-benz-gle-class--166---2016-2020--gle-450-esr9780931 0-liter BiTurbo V8 (M177) -engine:
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RENNtech Intermediate ECU Upgrade for E 550 BiTurbo | C207 | 480HP/523 LB-FT | M278 Engine | MY2014-2017 mercedes-benz-gle-class--166---2016-2020--gle-450-esr9780931 0-liter BiTurbo V8 (M177) -engine:RENNtech Intermediate ECU Upgrade for 207 E 550 BiTurbo 2014 2017 FaceLift. Up to 480HP and 523 LB FT. Gains: +78HP & +80 LB 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
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