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Discussion Starter #1
Hi all new to the forum, I bought a new Scram 850 and installed a K&N filter and it back fires like crazy now-put the stock back and its fine?? shouldn't the EFI compensate for air intake?? Never had a problem with my crotch rockets?
Any input would be great cool site.
 

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Yea I had the same problem I removed my spark arrester as well because it sounded a lot better but it backfired like crazy!
 

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Discussion Starter #3
crappy

ya I did the same and through it in the garbage like I do with all spark arrestors, runs much better and sounds better.
 

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Welcome to the board!
 
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