06 FXSTI back fire

Goofuss69 · Jul 22nd, 2008, 06:26 PM

Hi I have an 06 FXSTI that I bought used.The first owner put screaming eagles on it. He also put on a high performance HD air filter. Now the back of my breather box has been taken off. The bike runs great when I am going down the highway, but when I back off the throttle to slow down it will spit and backfire. It also does not like to go slow. It run ruff if I have to ride from idle to about 25 mph. Is there anything that I can do to get it to run better. That will not break the bank? Maybe go back to the stock air filter. Thanks in advance!

glider · Jul 22nd, 2008, 06:45 PM

Try the stock air filter. If that makes a noted difference for the better, then you need to add some fuel if you want to run the low restriction setup again.
You might take a look for an intake leak also.
Finding An Intake Leak - Harley Davidson Community

Without breaking the bank with dyno pulls etc, I suggest a TFI.

Motorcycle Fuel Injection Kits and Electronic Fuel Injection Systems - EFI

Goofuss69 · Jul 22nd, 2008, 07:19 PM

Not to sound dumb, but maybe I already do what is a TFI.

glider · Jul 22nd, 2008, 07:26 PM

It's a means of adjusting the fuel injection on the engine. Usually find them under the seat.

Looks something like this one.

Goofuss69 · Jul 22nd, 2008, 07:33 PM

Thanks, I will start by hunting down a stock air filter box and filter and see where that gets me. I can't believe the guy I got this from didn't keep his stock parts. I kept everything that I replaced on my 883.

glider · Jul 22nd, 2008, 07:39 PM

Check first to see if you have any fuel controllers on the bike.

Goofuss69 · Jul 22nd, 2008, 07:49 PM

I will look. I don't think that I do. I have had the seat off putting on my battery tender wires and didn't see anything like that.

wildspirit97 · Jul 22nd, 2008, 07:59 PM

Quote:

Originally Posted by Goofuss69

I will look. I don't think that I do. I have had the seat off putting on my battery tender wires and didn't see anything like that.

can you contact the person you bought it from and ask what was done for stage one? It's possible the s.e.r.t. (screaming eagle race tuner) was installed. If that's the case it may be a bad Dyno tune.

Goofuss69 · Jul 22nd, 2008, 08:28 PM

Thanks for the tips.

Goofuss69 · Jul 23rd, 2008, 09:10 PM

A guy That I work with is getting me a stock air box to try. If this fixes the problem I will look for a used one.

Jul 22nd, 2008, 06:26 PM	#1
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	06 FXSTI back fire Hi I have an 06 FXSTI that I bought used.The first owner put screaming eagles on it. He also put on a high performance HD air filter. Now the back of my breather box has been taken off. The bike runs great when I am going down the highway, but when I back off the throttle to slow down it will spit and backfire. It also does not like to go slow. It run ruff if I have to ride from idle to about 25 mph. Is there anything that I can do to get it to run better. That will not break the bank? Maybe go back to the stock air filter. Thanks in advance!

Jul 22nd, 2008, 06:45 PM	#2
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 21,068 My Mood:	Re: 06 FXSTI back fire Try the stock air filter. If that makes a noted difference for the better, then you need to add some fuel if you want to run the low restriction setup again. You might take a look for an intake leak also. Finding An Intake Leak - Harley Davidson Community Without breaking the bank with dyno pulls etc, I suggest a TFI. Motorcycle Fuel Injection Kits and Electronic Fuel Injection Systems - EFI __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Jul 22nd, 2008, 07:19 PM	#3
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	Re: 06 FXSTI back fire Not to sound dumb, but maybe I already do what is a TFI.

Jul 22nd, 2008, 07:26 PM	#4
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 21,068 My Mood:	Re: 06 FXSTI back fire It's a means of adjusting the fuel injection on the engine. Usually find them under the seat. Looks something like this one. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Jul 22nd, 2008, 07:33 PM	#5
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	Re: 06 FXSTI back fire Thanks, I will start by hunting down a stock air filter box and filter and see where that gets me. I can't believe the guy I got this from didn't keep his stock parts. I kept everything that I replaced on my 883.

Jul 22nd, 2008, 07:39 PM	#6
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 21,068 My Mood:	Re: 06 FXSTI back fire Check first to see if you have any fuel controllers on the bike. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Jul 22nd, 2008, 07:49 PM	#7
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	Re: 06 FXSTI back fire I will look. I don't think that I do. I have had the seat off putting on my battery tender wires and didn't see anything like that.

Jul 22nd, 2008, 08:28 PM	#9
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	Re: 06 FXSTI back fire Thanks for the tips.

Jul 23rd, 2008, 09:10 PM	#10
Goofuss69 Warming The Wheels Ride: 2006 Softail Std Join Date: Mar 21st, 2008 Location: Muskegon,Mi Posts: 119 My Mood:	Re: 06 FXSTI back fire A guy That I work with is getting me a stock air box to try. If this fixes the problem I will look for a used one.

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06 FXSTI back fire

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