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[Jeffytune]

Originally Posted by guzz48

I bought a 05 FLHT, it had screaming eagle one piece slip-ons on it when i bought it. it back-fired awful bad,ran pretty good. I talked with the dealer, they told me that they didn't adjust the stock map on it, they also told me that i needed a hi-flow air cleaner to make it run better. so i got the S-E hi-flow installed it. it really poped then, I didn't even dare ride it because i thought it might be running way to lean. I got the V&H fuel pac from JP Cycle, it was very easy to install and seems to be working well. I put in FP-0383 that is the numbers they recomended for my set-up. It still has a little decel pop, but not bad. All in all i like the fuel-pac

You might try this......

recheck all the cell, then re-due cell 19. try to use a steady motion, count 1-one thousand (Full throttle) then 2-one thousand closed.
Practice this before hand to get a feel for, be as smooth and even of speed as possible.
The recheck the throttle on cell 22, make sure it goes from 00 to 99 then back to 00.
Then turn it off, and wait a minute, and then take her for a spin.

If it still has Issues, I would say you need to check the Intake and exhaust seals.