Joe lives a few miles from our shop and just purchased his ATS-V from someone in Texas. When he bought the car it had already been tuned by someone else, so we did a baseline Dyno pull on the existing pump gas tune to see where he was starting at. His ATS-V made respectable peak power of 498 whp and 490 wtq on 93-octane fuel.
With no changes other than our custom tuning, we improved his numbers to 518 whp and 555 wtq. That’s 20 more whp and 65 more wtq than the previous tuner could provide! We then completed several fuel system upgrades to bring him up to our Purple Belt Performance Package. After adding some ethanol to the tank we created our Flex Fuel Tune for an E50 fuel mix. Final results were 604 whp and 628 whp with a much improved powerband! That just goes to show that ATS-Vs love ethanol, and they really love proper tuning.