Reflashed 1 bar SD custom OS, changed 2 year old oil, removed 50,000 mile air filter and switched out 5 year old V power plugs that were a step cold. Oh, and added Lucas to the transmission to make sure it lasts another month. :lol
Honestly the tune up will do more than the OS change, I used the same calibration. Haven’t taken any time to tighten up the 93 tune mostly because I don’t feel like doing it twice this month (I’ll be back on e85 once I get another set of injectors).