McLaren GT ECU Tune — Power Figures

Factory output for the McLaren GT is 612 hp and 465 lb-ft (crank).Stock + RK-Tunes Tune raises it to 730 hp and 539 lb-ft, a gain of 118 hp and 74 lb-ft.High Flow Downpipe / Exhaust + RK-Tunes Tune raises it to 761 hp and 562 lb-ft, a gain of 149 hp and 97 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.