Well, I just got the car up to an E20 blend for fuel, and it took away ALL the timing corrections I was seeing on logs. BUT, the same issue is still persisting, this time Cylinder 2 misfire. (Before I was getting Cyl 1 and 3 pretty consistently...) Pretty much only happens during a shift while in boost during a pull. For this example, I've been doing pulls in 3rd gear (car feels great during the pull and I feel NO loss of power!), but when it goes to shift to 4th during the pull, it then displays the EPC light and goes into limp mode.