Fuel adjustment question?
Fuel adjustment question?
I changed my headers on my 2011 flhtk from a stock header to a stock with the cat taken out. I didn't change anything else ( I have Vance & Hines slip ons since 2 months after I bought the bike ) now right away I noticed that the bike is idling lower, right around 1000 rpm mark and if I'm sitting at a light it almost feels like the bike is gonna shut off but it doesn't. Also when I'm riding locally and I stay in the same gear for a while at around 20-30 mph it's very hard to accelerate and decelerate smoothly, it seems like the bike has some kind of hesitation where it will either drop back or give a tiny lurch forward if I try to just smoothly pick up or slow down speed. Regular pick up and stopping is fine as well as full highway speed.
I know the computer is supposed to adjust the fuel mixture and all that, does it take a while for these adjustments? Or do I just have to get used to it, or did I mess something up?
I know the computer is supposed to adjust the fuel mixture and all that, does it take a while for these adjustments? Or do I just have to get used to it, or did I mess something up?
Seasoned HDF Member
Joined: Feb 2007
Posts: 10,602
Likes: 721
From: Bellevue, NE
You sure you put the O2 sensors back in the right holes? That's about the only thing you could have messed up unless you have an exhaust leak. I don't think gutting the cat should really impact performance at all, much less in a negative way.
No I'm not sure. I couldn't figure out which goes where since they both looked the same so I just put the one that connect in the connecter towards the front in the front hole and the rear in the rear hole.
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
The Gray connector goes to the front cylinder.
The Black connector goes to the rear cylinder.
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Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
There is an article here worth reading. You may have messed something up, but more likely you need to install a suitable tuner, to properly compensate for your modifications.
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Would they fit reversed? In other words instead of my swapping them at the pipes could I swap the connectors and plug the gray into black and black into grey?