I am still using ACES, though I am still stock it is difficult for me to produce quantitative data. I did see a jump in gas mileage, though that has seemed to decrease slightly. I still see a significant amount of soot at the exhaust tips.
Has anyone pulled plugs after using ACES for a while?
I am still hoping that ACES is an option instead of meth. To be clear, I do not think ACES will be a complete replacement to meth; I have no illusion that a 'fuel catalyst' is going to compete with a secondary fuel source. However, if tuning allows for a "watered down meth tune" or an "increased non-meth tune" then I think this is a great play.