I have tuned a good bit of these 2015 and newer Mustang GTs with Headers, Cold Air Intake, Exhaust, and E85. I cant pull more than 440-450 wheel horsepower out of them on a dynojet 224. Timing is around 28-30 degrees AT WOT, fueling I have set between .85 - .90 Lambda.
I have heard of some getting 480-500 wheel with this setup, I just don't see how. If so what are you guys doing to get that power? Or is 450 wheel normal on a setup like this?