My ECU has a workable tune from my last set up. I'll have to talk to my tuner tomorrow and see if he's interested in working with this. I am putting everything together in the a week(s) or so. With a high compression, cammed, E85 car this might offer a level of safety and I can ditch my N2MB and not go through the effort of tapping in a J&S or the like. I feel the faster processor and increased resolution in the tables plus not having to scale gives a great benefit in precision. Definitely going to look into this, very exciting there still new tech coming out for this platform. Going to dig into this in the next few days and see what it offers in terms of ethanol content for safety, knock sensing, etc and make a decision. Price is pretty on point considering.Well Kevin, it is plug compatible right? Save your OEM ECU, unplug the MS3Pro when you are ready to go back to the street, Plug in the OEM ECU and don't worry be happy. Don't forge to tell the OEM CPU what size injectors you are running. Couldn't be easier.