Alright guys. So as of now, i have an 04 xb12r with a TI-FORCE exhaust ( complete system ). I want to keep the head pipe, have a 2 into 1 collector made w/a midpipe running to a werkes g.p. style slip-on. I do have a race ecm that has been tuned by Team Latus Harley/buell and a K&N. I guess what my question is, What, if any precautions do i need to take and what would i need to do as far as map/tuning go?