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Opto
| | Posted on Tuesday, February 01, 2005 - 02:13 am: | 
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I remember Bubba saying that he's seen running problems when the injector wires are mixed up, that is, if the white/yellow wire for the front injector is connected to the rear injector. I know with the TFI it doesn't matter which pair of wires intercept which injector, but ultimately the front injector wire should still control the front injector via the TFI. I haven't seen a TFI wiring harness so I don't know if it's possible to get the wires mixed. Just a thought. |
Cataract2
| | Posted on Tuesday, February 01, 2005 - 07:19 am: |
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Nope, I checked those connections, they're fine. It's just a tuning issue that's pushed me to far. This truely is what tuning hell is. Anyways, I'll play with it on thurs. If all else fails I set it back to stock and schedual a dyno day. |
Rigga
| | Posted on Tuesday, February 01, 2005 - 08:15 am: |
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getting it set up on the dyno with a gas analyzer is the only way,otherwise its all guesswork,and sorry guys but seat of the pants dyno's are worth nothing....when i fitted the tfi and stock ecm to my bike and rode it i thought it felt great,on the dyno it was worse than the race kit i had on before,you cannot guess these things |
Glitch
| | Posted on Tuesday, February 01, 2005 - 09:26 am: |
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thinkin i'll probably leave it stock no headaches....
No headache here, I've never been one to leave well enough alone. It's just not in me. I love hot roddin' my bike, it's part of the whole experience, for me anyway. |
Rr_eater
| | Posted on Tuesday, February 01, 2005 - 12:49 pm: |
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I too have had an issue with mine, that as of now, seems intermittent.
At a constant speed in 5th gear, at almost excatly 3750-4250 RPM, the bike, again intermittently, will stumble then smooth then stumble then smooth then stumble then smooth so on and so on.
This will go on, until 1 of 2 things happen:
1) I slow down to under 3600 RPM, (too slow for the roads out here in the central valley) or it will just go away for a time. Yesterday I did 300 miles, 150 out and 150 back. On the way out, not a single problem, on the way back, it started again. It is not 5th specific either, as I dropped down into 4th and slowed again, steady state 3700-3800 Rpm, and it did it there too.
Any ideas guys? I have the pots set at 3-7-4-7, like the booklet says. Bike runs GREAT otherwise, smoother, more linear power curve, less popping, so otherwise I love it, its just dang annoying when it is doing this stumble thing.
Bruce |
M1combat
| | Posted on Tuesday, February 01, 2005 - 12:57 pm: |
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"Nope, I checked those connections, they're fine. "
I don't think he meant that maybe the connections were loose, but that maybe the wires were swapped somehow and you have the rear injector firing when the front injector is supposed to. Did you check THAT or did you check that they were connected securely? |
Bud
| | Posted on Tuesday, February 01, 2005 - 04:02 pm: |
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I don't think he meant that maybe the connections were loose, but that maybe the wires were swapped somehow and you have the rear injector firing when the front injector is supposed to. Did you check THAT or did you check that they were connected securely?
that was my first tought
didn't here it with a tfi, but with normal buell Fi, i have heard that before |
M1combat
| | Posted on Tuesday, February 01, 2005 - 04:11 pm: |
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That sounds about right with sequential injection too...
Maybe when the original injector plugs were undone, they were inadvertently swapped and then plugged in wrong. I'd swap them just to see if there's a difference for the better/worse. If you have a service manual you could look at the appropriate wiring diagram and find out which color wires go to the front injector and which goes to the rear.
I made sure I did mine one at a time and decided that it didn't matter which lead from the TFI I used, but I'm sure with sequential injection that using the proper lead from the ECM is a must. |
Cataract2
| | Posted on Tuesday, February 01, 2005 - 04:36 pm: |
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I don't think he meant that maybe the connections were loose, but that maybe the wires were swapped somehow and you have the rear injector firing when the front injector is supposed to. Did you check THAT or did you check that they were connected securely?That's what I meant. I check and rechecked it. The front is on the front and rear on the rear. |
Odie
| | Posted on Tuesday, February 01, 2005 - 04:38 pm: |
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The factory injector wires are labeled also..... |
Doughnut
| | Posted on Tuesday, February 01, 2005 - 04:40 pm: |
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Gremlins? |
Hogs
| | Posted on Tuesday, February 01, 2005 - 04:43 pm: |
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Good day all...
Can someone give me the part number for these for the buells?? Thanks |
Ingemar
| | Posted on Tuesday, February 01, 2005 - 04:55 pm: |
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According to George at Dobeck's it doesn't matter which connector of the tfi goes on which injector, as long as you dedicate the original(buell) injector connectors to the original(buell) injector it does not matter from their unit. |
Glitch
| | Posted on Tuesday, February 01, 2005 - 05:36 pm: |
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Hogs it's FI-1045ST |
Hogs
| | Posted on Tuesday, February 01, 2005 - 06:59 pm: |
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Thanks Glitch... |
Cataract2
| | Posted on Thursday, February 03, 2005 - 01:05 am: |
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Well guys, I've been doing some serious thinking. I'm going to pull the TFI unit until I get the time and money for a dyno run. In the mean time it's coming out. I'll just stick with the race kit for now and maybe upgrade to a D&D pipe or Drummer. I do have one question though. My cut airbox is suck that only the lid over the airfilter is left. That shouldn't lean the mixture to much being that I had a 12 airbox to begin with right? |
Rigga
| | Posted on Thursday, February 03, 2005 - 08:10 am: |
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well it will be pulling more air due to the extra exposed surface area,but hopefully after riding it for a short while it should adjust itself to somewhere near where it should be,but from my experience with a very free flowing pipe it really leans the mixture out |
Rigga
| | Posted on Saturday, February 05, 2005 - 09:19 am: |
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well having set up the tfi with much difficulty,and being way off the recomended settings from dobeck i know no exactly why this was.....my supplier included a note stating there may be a wiring issue regarding the o2 sensor wiring,he had liffted a snippet of information off here that stated which wire should go where.....upon installing the tfi it looked like my unit had the o2 sensor wires pinned incorrectly,so i swapped them over,had it set up as previously detailed,and was happy to leave it at that,until the other day another xb owner here in the uk told me he had also purchased a tfi off the same source and upon reading the included information was unsure so contacted dobeck to check...upshot is ive also contacted george and ive been running the o2 sensor the wrong way round!!! what a pain in the arse,anyway ive rectified the situation,hope ive not damaged the tfi unit in any way,but will have to get it set up all over again,have made some changes to the set up anyway so might be a good idea
www.freewebs.com/martin_brown |
Odie
| | Posted on Saturday, February 05, 2005 - 04:00 pm: |
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Rigga, I had brought up the incorrect pinning on the O2 sensor a month or so ago. Mine were backwards also. I just disconnected mine today (left it installed but just disconnected the TFI) and went out for a hard twistie ride and it didn't skip a beat. Not a sniff, stumble, sputter, backfire, nothin'........It ran perfectly fine. It didn't have to hard hit out of the corners but it ran well. Gonna recheck everything again.....Odie |
Lonexb
| | Posted on Saturday, February 05, 2005 - 04:03 pm: |
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odie i just sent you a pm please check it.
(sorry for the hijack) |
Cataract2
| | Posted on Saturday, February 05, 2005 - 04:50 pm: |
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I thought it only wired to the O2 one way. Don't see how you could wire it in backwards. |
Odie
| | Posted on Saturday, February 05, 2005 - 05:23 pm: |
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The connectors were on the wrong wires. Female was where the male should've been and vice versa.....Odie |
Newxb9er
| | Posted on Saturday, February 05, 2005 - 05:39 pm: |
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How do you know if it is the wrong way? Before I put my bike together, I should check. |
Odie
| | Posted on Saturday, February 05, 2005 - 07:15 pm: |
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Newxb9er, I'm at work so I can't take my airbox off. It would've worked out where the O2 sensor wasn't sending the signal to the TFI box if I remember correctly. Let me look at it in the morning and I'll let you know....Odie |
Rigga
| | Posted on Saturday, February 05, 2005 - 07:56 pm: |
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ok this is the official line from george at dobeck,there has been postings on here before about what colour wire from the tfi goes to where on the bikes loom.
TFI unit
pink/yellow wire has a male connector with a female pin
tan wire has a female connector with a male pin
all later tfi units should be ok as i think only a small batch went out incorectly wired,as the buell loom is pretty much standard just check the tfi connectors are as above and all is well |
Xbolt12
| | Posted on Friday, February 11, 2005 - 03:04 am: |
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Yeah, my early TFI unit was mis-wired as well. You can look up my old posts in the archives regarding connector part numbers, color code, etc.
George sent me a connector in the mail at no charge, but being impatient I had already bought some at NAPA Auto Parts.
xbolt12 |
Rigga
| | Posted on Friday, February 11, 2005 - 06:18 am: |
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ive mailed george to ask if running the bike with the o2 wires connected te wrong way round has damaged the tfi unit.....he was unsure and just said try it and see,not had a chance to ride it since i corrected the wiring,did anybody run the bike with the tfi connected up wrongly like this,and then correct it?..was the tfi ok? my supplier has said he will replace the tfi unit for me if there is a problem as he supplied the incorrect information about the o2 wiring issue,but any feedback would be a help
(Message edited by rigga on February 11, 2005) |
Briz31
| | Posted on Friday, February 11, 2005 - 09:02 am: |
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Hi Guys in TFI land.
Q: on installing the device I get the GREEN POT flashing & no " all pots flash on initial power up" Manual says this is a connection fault with the Yellow/White lead from the TFI device.
I have checked all leads and I'm still getting the same thing...
A FLASHING GREEN POT on power up.
Is This thing playing with my head, This is the second device I have had, the first was even stranger, dealer replaced it.....
How do i know if my device is working correctly.
How can you check to see if all the connectors are accurate.
Cheers guys |
Odie
| | Posted on Friday, February 11, 2005 - 10:37 am: |
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Briz, go to Techlusion.com and then to Support forums, then to general questions. There is a thread by someone at Dobeck that explains in alot more detail the pots and their functions. Helps out alot!!! |
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