Question about 2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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Hard to start when hot

I have a 07 ultra with a stage 1, true duels and SE mufflers and a vance & hines fuel pack, it's hard to start and backfires tru the intake ( only when hot ) and has no power @ speeds 70 plus, want hold speed in 6th gear on overpasses, etc. When I unplug the fuel pack it improves but still has same problem. I just put new plugs in also.
Thanks
Keith

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It sounds like you fuel map is wrong. Motorcycle are extremely sensitive to any changes you make in the intake or exhaust system. Sounds like you need to take your bike and have it put on a dyno to figure out the new map for your fuel. I'm not familiar with the the Vance & Hines fuel pack. Sorry I couldn't be of more help, Good Luck, Steve

Posted on Apr 29, 2010

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