Great question @Jake94134. I have also wondered about the order of doing the tunes and install...Set up the MM3, Install Ray's Tunes, switch out the parts, then start her up. If I followed the thread correctly, that should be it (Still learning myself and watching as many Ray videos from @Double R Diesel as I can too).

Sounds like you like the result. Man I can't wait until I do mine, but I need to build up some funds first. Enjoy!

Alex