McLaren 650S ECU Tune

Achieve maximum power gains without sacrificing driveability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat Bypass Pipes, X-Pipe Exhausts, upgraded turbos, and more. Once we receive your ECU, our tuner bench flashes it with the upgraded ECU map and we return it to you for easy re-installation; no modifications to the vehicle are necessary.       POWER GAINS Gains of 45 WHP and 60 ft-lbs WTQ (Stage 1) Gains of 80 WHP and 100 ft-lbs WTQ (Stage 2 with Catless Downpipes)  NOTES This is not a physical/shipped product.  This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out. You must fill out and include a copy of the ECU Information form along with your ECU upon sending it in. Please contact us if you need to send the form in any other manner. 1K Motorsports saves your stock/factory ECU settings so that you ca