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I have asked you guys before about my H1 poppin when I let off the throttle and we figured that it was lean but I took the plug out yesterday and it was a little black like shes runnin rich. The whole thing is stock except for the HMF, oh and when you let off the gas at night it will shoot a small flame out. Any more ideas?
 

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My buddy has a Grizz and it did the same thing, we bumped the pilot jet up two sizes (I think two maybe just one) and it stopped.

Hope this helps :beer_cheers:
 

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If you run the Speedwerx exhaust, they recommend a 55 pilot jet (up from a 45). If you haven't rejetted with that HMF, that's likely your huckleberry.
 
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