Hey all! Just purchased a 2016 Fiesta ST with a little under 70,000 miles and a bunch of mods. Performance wise it has a cold air intake, inner cooler, exhaust, aftermarket wheels and lowering springs. It’s running a Cobb stage two tune. I don’t know a lot about tuning, I’ve never used a Cobb access port, and I’m hoping I can get some advice from some of you more experienced tuners. If you have any tips for me I’d love to hear them! Right now I’m hoping to better understand the whole ethanol mix situation. The previous owner said the stage 2 tune needs an ethanol mix of 30, but he told me some complicated method of calculating it that I’m having trouble understanding. Also, I’m wondering what the Cobb access port is capable of, I’ve been doing research but it seems like there is so much to learn. I look forward to hearing from you all! -Michael