Hello, i have a vmax 4 that is running poorly. it will start and idle great but when the throttle is pushed it wants to die. sometimes it backfires. if you fiddle with it enough it will rev up but it doesn't seem to be running quite right. it went through a fire and i got all the neccesary parts. it ran great for the first 15 miles! then in an instant it started to run bad. any help would be greatly appreciated.
thanks
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