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McLaren 675LT ECU Tune


Achieve maximum power gains without sacrificing drivability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Catbypass Pipes, 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 reinstallation; no modifications to the vehicle are necessary.     


  • Stock = 582 whp / 490 ft-lbs
  • Tuned = 629 whp / 516 ft-lbs
  • Tune + Catless Downpipes = 635 whp / 526 ft-lbs
  • Maximum gains of over 85 WHP and 95 ft-lbs of WTQ (Stage 2)


  • 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 can revert your vehicle back to stock settings at any time.