I have a big bore (860) kit on my XP154 with the recurved ECM from RK, with 50/50 mix it rocks pretty good and have never missed a day riding BUT Im always wanting more so my question is: can i turbo this sled with the current set up or do i need to bring the engine back to orginal and then turbo or should i consider NOS on the big bore. All day power would be nice though!