No Device: DISABLING DECEL FUEL CUT OFF

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Apr 13, 2026 | 12:14 AM

BDX2

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Joined: Sep 2010

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From: NorthEastern Pa.

DISABLING DECEL FUEL CUT OFF

I have a 2021 Ultra Limited. Bone stock except for tab zombie slip ons. I'm perfectly happy with the bike as is no plans of ever modding ( OK maybe a better intake and tune if I ever get around to it) maybe a quick detach system but honestly not sure if I'll ever really want to do without the top case... Anyway the only reason I don't think the bike is PERFECT is because of the decel fuel cutoff. It drives me crazy. I've read that slightly adjusting the TPS to read 2% VS 0 when closed could do it but might cause problems. I've also seen that Vance n Hines and one other company makes a tuner that will toggle the cut off on/ off but over $400 for just that IDK, the dealer most likely cannot due to EPA regulations. is there any other way ? If anyone has ever done anything regarding this I'd really like to hear about it. Thanks Sincerely, Joe

Apr 13, 2026 | 09:15 AM

bustert

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Joined: Aug 2008

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why is it driving you crazy????
so you like the decel explosions? drive the neighborhood dogs mad?
millions of vehicles have that system and for decades so what gives???

Apr 13, 2026 | 12:23 PM

Lonewolf176

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Joined: Sep 2007

Posts: 2,463

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From: Vancouver Island B.C.

Quote:

Originally Posted by BDX2

Your bike is tbw with no iac motor so it will never see 0 or 2% tps. Warm it may get as low as 3% but usually 4-4.5 %. Cold it can be as high as 7-8%. It's been years since the bikes shut off the fuel during decel, now the injectors "trickle" a little fuel. Are you having an issue with decel popping?

Apr 29, 2026 | 12:24 PM