Engine is a 325 indmar in a 2006 Supra Launch 21V. Out of the hole is great....¾ throttle is great..Doesn't miss a lick when riding or pulling...it only does it when I go to 100% throttle or reaches 3500rpms....it starts missing a little like small spurts of no fuel or fire. I replaced the plugs and wires and it did not do the trick. I was gonna change the fuel filter next and then the fuel pump if this doesn't work.... Any ideas before I start getting to deep?