This has happened on 3 seperate riding occassions during the past week, thought i would throw it at ya'll to see what you think. I hop on the scoot, let her warm up and take a ride. She normally idles at 900/925 at a stop light. First two lights, I'm ok. a mile later, I come up to the light, she drops down to 800ish and dies. I start up, go to the next light, she dies again. The lights are roughly 1-1.5 miles apart. At the next light, she stays at 900ish and all is well. The rest of the ride is flawless, with and without stops. Cruising speed is fine....no sputtering, all is good. ONE NOTE - At take off from the light, on occassion ( 2nd to 3rd gear), I'll get one heck of a backfire. not constantly, just on occassion. This has happened on 3 seperate days now. Could it be the intense heat in DFW? 105+ The Bike - Stage 1, Hooker slip ons, nothing else. 1000 miles on the fuel filter.....the inside hoses (fuel) all good. I just came in from outside, she's idling right at 900/925. Thanks for any input.....have a great day.