| Author |
Message |
    
M1combat
| | Posted on Thursday, April 01, 2004 - 04:00 pm: | 
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I don't want to run more rich than stoichiometric... I want to run stoichiometric. I have heard that due to noise regs and exhaust regs that the bike runs fairly lean stock.
"M1 I think your on the right track but some of the guys here think it takes more than just changing the voltage sent to the ECM from the O2. You got me curious tho. "
I don't want to change the voltage from the O2 to the ECM... I want to change the O2 sensor out with one that reports the same voltage as the stock O2 but reports that voltage at stoichiometric instead of lean. That sounds like the "cleanest" approach to me...
Stot - What sort of Overclock did you get with the added voltage? Water cooling? |
Stot
| | Posted on Thursday, April 01, 2004 - 04:51 pm: |
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As I recall I got a 1ghz AMD to 1.8 yep watercooled, best thing about watercooling for me though is the noise. I have none at all running my computer stock with watercooling. ahhhhh bliss.
Oh btw the cleanest method to do what you what is exactly as im saying, throw a resistor inline, use a pot so you can adjust it to where you want. You dont even need to cut any wires or pull your bike to pieces to remove the O2 sensor.
Im using the terms rich and lean but just as terms of perspective, if the std ECM is indeed lean you can dial in to where you feel is the best performane.
Its the ECM that decides what voltage is sweet not the O2 sensor. Id give it a go but I have the race ECM fitted now.
Cya
Stot
edited by stot on April 01, 2004 |
Lightisright
| | Posted on Thursday, April 01, 2004 - 11:13 pm: |
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The O2 sensor is only trimming the a/f ratio under steady state conditions. Transients are handled by the map. I would guess also that under full throttle the computer ignored the O2 sensor and uses the map (typical on cars). Therefore screwing around with the O2 sensor voltage (offsetting it) will really only affect your a/f ratio during cruising and less than full throttle accel. Best power is usually made with a/r = 12.5 but newer, very efficient head designs work best in the low 13's. |
Opto
| | Posted on Friday, April 02, 2004 - 01:55 am: |
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I want to run stoichiometric.
M1, isn't stoichiometric a 14.7:1 ratio, and that's what the ecm runs the bike at? |
Stot
| | Posted on Friday, April 02, 2004 - 02:36 am: |
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Offsetting it will offset the whole map, saying the ECM ignores it at WFO or idle is true BUT the values for the map being used then are made from the readings taken While cruising. Its not like there is a seperate map for open loop and one for closed loop, there is one map it is only adjused up or down during cruising.
Cya
Stot
Cya
Stot |
Martin
| | Posted on Friday, April 02, 2004 - 03:05 am: |
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anybody got a nice little chart that explains which bits do what and when? I have a memory problem so its a lot easier to have something I can refer-back-to. eg
Condition--Controlled by
idle Map?
WFO ?
cruising ?
where does open and closed loop fit into this? (I know that the answers are in this thread but I can't pull them out in my head!
If I adjust the map with My PC111, does the system unlearn the changes?
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Stot
| | Posted on Friday, April 02, 2004 - 11:11 am: |
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Martin,
With the commander you program your own map and the ECM/O2 sensor sill adjusts acordingly but using your map.
To see a visual of what open closed does to a map see figure 4 on this page.
http://lightning.prohosting.com/~buells2t/ddfi.htm
Its a great explanation of how DDFI works.
WFO = wide feckin open
cruising = riding at around 3500rpm
dont think there is an idle map?
Cya
Stot
edited by Stot on April 02, 2004 |
M1combat
| | Posted on Friday, April 02, 2004 - 12:43 pm: |
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"M1, isn't stoichiometric a 14.7:1 ratio, and that's what the ecm runs the bike at?"
No, I think it runs leaner than that. I don't know the exact ratio, but I'm pretty sure it's more lean than 14.7/1.
"Its the ECM that decides what voltage is sweet not the O2 sensor. Id give it a go but I have the race ECM fitted now. "
COMPLETELY understood...
I want to change the O2 sensor out for one that reports the SAME voltage as the stock unit, but reports that voltage at the correct A/F mix rather than lean...
The ECM IS affected in BOTH modes by the O2. One mode is affected in "realtime" so to speak, the other mode is affected by a value attained while cruising. That value is called a AFV or "Adaptive Fuel Value". The A.F.V. is "basically" a number from one to one hundred that the ECM applies to the stock map to move it up or down to keep the O2 sensor in the proper range (reporting .45V I think). If we can get an O2 sensor that both fits AND reports .45V at stoichiometric instead of lean we are in like Flynn...
I would love to mount an AF ratio meter as well.
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Mikep
| | Posted on Friday, April 02, 2004 - 12:58 pm: |
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I want to know where we stand on procurring an inexpensive Diagnostic Tool ($99) that can reset TPS, AFV, and read out the stuff that is happening on the communication buss.
mikeyp |
Martin
| | Posted on Friday, April 02, 2004 - 02:20 pm: |
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Thanks Stot |
Mikep
| | Posted on Wednesday, April 07, 2004 - 02:58 pm: |
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(www.technoresearch.com)
This is the company that was looking at making a Diagnostic tool for the XB. I wonder how they are progressing.
mikep |
M1combat
| | Posted on Wednesday, April 07, 2004 - 03:07 pm: |
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Sent them an e-mail expressing interest in a diag tool for an XB or at the least a "blackbox" that will reset a TPS. |
Mikep
| | Posted on Wednesday, April 07, 2004 - 03:09 pm: |
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M1combat,
Thank you. I shall keep checking back for progress.
mikeyp |
Fullpower
| | Posted on Thursday, April 08, 2004 - 03:45 pm: |
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i wrote them (www.technoresearch.com ) a slow mail letter expressing much interest. the more noise they get, the more likely they will bring a product to market. heres hopin' |
2k3lightning
| | Posted on Thursday, April 08, 2004 - 08:50 pm: |
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Just send an e-mail to http://www.technoresearch.com/ like was stated in an earlier post keep asking for the product. If you build it they will come  |
2k4xb12
| | Posted on Thursday, April 08, 2004 - 10:31 pm: |
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I did my duty...
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Glitch
| | Posted on Friday, April 09, 2004 - 11:33 am: |
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Dear Sir
We are working on a Bull software version. We will inform you when it will be available. It should take 2 or 3 months
Best Regards
Giamberto Scaccia
Director Of Engineering
Wow they are pretty quick. I just e-mailed them this morning.
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Glitch
| | Posted on Friday, April 09, 2004 - 11:39 am: |
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Bull software version
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Kevinfromwebb
| | Posted on Friday, April 09, 2004 - 07:59 pm: |
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Bull Software Version... YeeHawww...
Sorry bout that, I am from Texas after all...
Kevin
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2k4xb12
| | Posted on Tuesday, August 24, 2004 - 05:26 pm: |
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****UPDATE****
I just received an Email from Technoresearch:
Dear Sir
I would like to inform you that the vehicle diagnostic scan-tool for Buell motorcycles is ready and available!!!
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