Hello guys, I upgraded my turbos and went with FrankenTurbos F21s and not K04s. Well my current ECU is a stage 3 EPL tuned for K04s. EPL, Epic, and the guys who sold me the Franks all say I need to retune my ECU or run a MBC to use a k04 tune on a FT. So before I chunk out a bunch of cash on another ecu or a retune I wanted to know why cant I use the EPL with the n75, but I can use it with a MBC? Will I be missing anything performance wise or would I be better off getting a FT specific tune. I have an offer to buy a ECU for half the price of the tune so I just wanted to know is it really worth it? Thank you for any assistance.