Welcome to Overkill Motorsports. We specialize in reprogramming the engine computer management systems in your GM V6 vehicles, including 3800 Supercharged, LFX 3.6 Direct Injection, your Pentastar 3.6 V6 vehicles, GM 5.3 LS4 V8 W-Bodies and more! Not a do-all tuning shop, we aim to be the best at what we do, for the vehicles we do it for.

We are a Canadian outfit, serving our great customers within Canada and across the United States of America. Note that pricing on our site is in United States dollar currency.

Please look around and see what we have to offer for your vehicle!


Proud sponsor and member of the OQCGP W-Body enthusiast club for more than 10 years!


Find reviews of Overkill tuning on these great W-Body community forums