• McLaren 570 GT4 before/after ECU tune - 640 rwhp

      The GT4 version of the McLaren 570 is obviously built for the roadcourse. It gets carbon fiber body panels, revised aerodynamics, stiffer suspension, cooling upgrades, magnesium wheels, etc. It also does not have to meet the same emissions regulations as the street car.

      Now, we previously saw before and after GT4 tune numbers from Dyno Spectrum on a Dynojet. They picked up 178 rear wheel horsepower.

      DME Tuning picked up 132 horsepower at the wheels on this Mustang dyno with a Stage 2 97 octane setup but oddly the baseline is much higher and so is the peak power output. It seems to be corrected to read like a Dynojet if not higher.

      Regardless, 570 GT4 race cars are picking up massive gains with just a tune:

      This article was originally published in forum thread: McLaren 570 GT4 before/after ECU tune - 640 rwhp started by Sticky View original post