Hey guys! My streetbob is close to becoming my ideal! i've changed the apes with the fatbob bar and risers (changed the top tree also) Added V&H slipons and K&N hi flow airfilter and of course fuelpak. i did the programming according to instruction from fuelpak site but the result is not very satisfactory. i have some backfiring and it is like te engine is "mixed-up" especially low and hesitated going from low rev's to hi with hi gears. does it get better with time or should i try something else?