HPF upgrade the fuel systems and setup Steves Evo8 and Charlies GTO to run on E85 and see how the results compare on a very different cars. We also have a chat with Charlie about his magnificent GTO. Eager to learn more about the use of ethanol based fuels in motorsport we head down to our friends at Garry Rogers Motorsport to see how the use of E85 has impacted V8 Supercars.