Mercedes-AMG GT 53 4-Door ECU Tune — Power Figures

Factory output for the Mercedes-AMG GT 53 4-Door is 429 hp and 384 lb-ft (crank).Stock + RK-Tunes Tune raises it to 475 hp and 430 lb-ft, a gain of 46 hp and 46 lb-ft.High Flow Downpipe / Exhaust + RK-Tunes Tune raises it to 495 hp and 450 lb-ft, a gain of 66 hp and 66 lb-ft.This tune is fulfilled by mail-in: you remove the ECU, ship it to us, and we flash it on the bench and return it.Figures are estimates at the crank; real-world results vary by vehicle condition, fuel and conditions.