What do you do when your 800-horsepower 572 just won't get you consistent eight-second passes in your '31 Model A? Well, if you're David Freiburger, you strap it to the Westech dyno to tune, poke and swap at until you're at a comfortable 950+ horsepower.

With the power potential of E85 available only at limited gas stations, having the ability to run a blend of gasoline and E85 in your street car is a game changer. Credit the flex fuel sensor. By sampling your fuel composition and adjusting fuel flow, you can not only run a mix of fuels, but make more and more power as you mix in more and more E85.