Efi Tuner Question
Tourer
Joined: Jun 2007
Posts: 292
Likes: 4
From: New Philadelphia, OH
That would make sense if we were talking about a sophisticated FI system with OBDII but we're not. He's got an '04. No oxygen sensors. The computer doesn't know **** about air/fuel ratio besides what you tell it, hence the need for a piggyback module. If the bike is running lean, the plugs will still tell the tale, fuel injected or not.
79lowrider, if your bike is running rich then you have the only fuel injected harley in existence that ever rolled off the assembly line while the EPA guys were on a coffee break.
79lowrider, if your bike is running rich then you have the only fuel injected harley in existence that ever rolled off the assembly line while the EPA guys were on a coffee break.
Road Master
Joined: Jul 2008
Posts: 1,021
Likes: 2
That would make sense if we were talking about a sophisticated FI system with OBDII but we're not. He's got an '04. No oxygen sensors. The computer doesn't know **** about air/fuel ratio besides what you tell it, hence the need for a piggyback module. If the bike is running lean, the plugs will still tell the tale, fuel injected or not.
Thread Starter
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Advanced
Joined: Apr 2008
Posts: 69
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From:
ok look guys its running rich! The plugs show it and so does the throttle body the butterfly is caked with soot also when i let off the throttle from normal riding like to come to a stop the bike will almost die but then as i sit with clutch in it will slowly idle back up also lay on it and black smoke will puff out the exhaust when i got the bike it already had the SE a/c and the thunderheader also it came from a HD dealership so i would assume it has had a stage 1 comp mod, now i have changed the exhaust i took the 2in1 off for a couple months and ran V7h straightshots now have the 2in1 back on is it poss the comp has forgot the stage 1 because of the exhaust change? also, is the PCIII easy to install? or is there alot more to it than the Fuelpak?
Thanks again
Paul
Thanks again
Paul
Outstanding HDF Member
Joined: Mar 2007
Posts: 2,379
Likes: 1
From: England via the US
ok look guys its running rich! The plugs show it and so does the throttle body the butterfly is caked with soot also when i let off the throttle from normal riding like to come to a stop the bike will almost die but then as i sit with clutch in it will slowly idle back up also lay on it and black smoke will puff out the exhaust when i got the bike it already had the SE a/c and the thunderheader also it came from a HD dealership so i would assume it has had a stage 1 comp mod, now i have changed the exhaust i took the 2in1 off for a couple months and ran V7h straightshots now have the 2in1 back on is it poss the comp has forgot the stage 1 because of the exhaust change? also, is the PCIII easy to install? or is there alot more to it than the Fuelpak?
Thanks again
Paul
Thanks again
Paul
Elite HDF Member
Joined: Apr 2007
Posts: 4,919
Likes: 23
From: Seattle, WA
If the EFI computer onboard was reprogrammed and is now running rich, then none of the foregoing options you mention will address your problem. That is because they are piggyback units and will only enrich the existing setting. They do not override the EFI computer to lean out the mixture.
I would have a dealer you trust reprogram the EFI; or, see if there's a way to reset the EFI to your stock settings. If you could do the latter, then a piggyback system would be of benefit. I run a Dobeck Techlusion ... also a piggyback unit. Like many systems, it has three-way adjustability, but will only add fuel (Dobeck makes the unti that some other sellers put their label on).
In your situation, I think it may be worthwhile to buy a Screamin' Eagle Race Tuner (SERT). It will be fully programmable and can address the issue of your bike being too rich.
R/
Priest
I would have a dealer you trust reprogram the EFI; or, see if there's a way to reset the EFI to your stock settings. If you could do the latter, then a piggyback system would be of benefit. I run a Dobeck Techlusion ... also a piggyback unit. Like many systems, it has three-way adjustability, but will only add fuel (Dobeck makes the unti that some other sellers put their label on).
In your situation, I think it may be worthwhile to buy a Screamin' Eagle Race Tuner (SERT). It will be fully programmable and can address the issue of your bike being too rich.
R/
Priest
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Advanced
Joined: Apr 2008
Posts: 69
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From:
ok well i have given the SERT some thought also now with the SERT will i be able to install it myself? because i want to be able to install the tuner myself and i dont want one that has to be dynoed
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Road Captain
Joined: Feb 2009
Posts: 659
Likes: 4
From: Rolla, MO.
I too went with the TFI. From what your saying about wanting to install your self then you want a tfi. On another site thats all they swear by. Go to the TFI site and find the video on installing and see how easy it is.
http://www.dobeckperformance.com/
http://www.hdtalking.com/touring_mod...obeck_tfi.html
http://www.dobeckperformance.com/
http://www.hdtalking.com/touring_mod...obeck_tfi.html
Elite HDF Member
Joined: Apr 2007
Posts: 4,919
Likes: 23
From: Seattle, WA
I don't have first hand experience with it, but have read quite a bit about it. I was planning on going with it myself, but it's a little pricier than TFI.
I think that if your current situation is running rich, you've got to consider how to address that; and I don't think you do that by getting an 'add-on' or 'piggyback' type system.
R/
Priest