I have a 04 WR450. Was running great. And in the middle of a ride I could run past half throttle. At about half throttle the bike just boggs out. Like it is not getting enough gas or electricle/ timming issue. But I have not idea where to begin. I drained out all the gas and replaced it, thinking I may just have just filled up with bad gas, (and I had just filled up with Exon 93) but that did nothing. I cleaned the air filter and again no change. I did recently install a Baja Kit, but it had been riding fine for about 40 miles since then with no problems. Ideas Please!