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Discussion Starter · #1 ·
So 2010 efi, ran great the 1st lap of the race then out of nowhere it started spiting, backfiring. changed the plug, changed the gas tank that had a good known fuel pump in it, still same problem. Any idea's on what could be causing it? seen a bunch of people that seem to be having the same problem but nobody has a fix for it.
 
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