McLaren 750S ECU Tune — Power Figures

Factory output for the McLaren 750S is 740 hp and 590 lb-ft (crank).Stock + RK-Tunes Tune raises it to 853 hp and 706 lb-ft, a gain of 113 hp and 116 lb-ft.High Flow Downpipe / Exhaust + RK-Tunes Tune raises it to 936 hp and 735 lb-ft, a gain of 196 hp and 145 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.