Quote from: Brucelinc on June 15, 2017, 11:49:23 AM
Not all cars are the same so you will want to experiment. I could run 12.8s consistently on just plain 93 which contains 10% ethanol. My personal best of 12.68 was with a mixture but it was also on a cool morning with better air. I suspect the conditions had more to do with the better time than the fuel.
Many guys swear by adding some E85 and they have timeslips proving that it helps. I couldn't make it work for me but it never hurts to try. Do NOT overdo it, though.
^ this... the prevailing conditions are very impactful to the performance of these cars.
As AJP has educated me on, the IAT2 sensor on the top of the intake manifold is your new best friend and hated enemy. It's temp reading controls your spark/advance tables, as the temp of that sensor (and others) go higher the more timing it will pull. And for these cars that retardation will greatly lower your 1/4 mile times and 0-70pmh times.
These cars are sedans and not configured to lose heat that easily in favor of quite smooth operation.
you will have to experiment to find out more, but as mentioned mixing e85 is both good and bad and may have differing impacts.
the STOIC for e85 (depending on the ACTUAL real ethanol content of the e85 bought) is 9.xx, regular gas is 14.7x, this greatly changes the characteristic of the burn, (flame-front). so your 'burn' is less efficient the more e85 you add. BUT if the octane increase offset the HYPER Aggressive timing on the race tune then it may be a net gain anyways.
thing being with the MYCAL, you should be able to get a better higher ethonal count tune and flip between them on race day..
