| Author | Message | ||
     Dcmortalcoil |
Back in November, I asked TechnoResearch (www.technoresearch.com) whether they will produce a diagnostic kit for Buell XBs. The answer back then was no. I just got an email from them: We are working on. It will take two months to complete! Regards Giamberto Scaccia | ||
| M1combat |
Very nice. What do you think they'll charge? | ||
| Fullpower |
will it reset the TPS ? | ||
| Dcmortalcoil |
One can only hope. | ||
| Unibear12r |
Thanks-good news. | ||
| Spyder12s |
just did some looking and it looks like the one for the Duk's is bout $500..but what do I know | ||
| Roc |
Fingers crossed! | ||
| Noface |
maybe we can all chip in to get one, and pass it around as needed, LOL! I know my bike needs a TPS reset, but I'm too damn lazy to ride to the dealer 50+ miles away... sure would be nice to be able to take care of that myself. | ||
| Fullpower |
if they start production, and if they sell a bunch of them, the price may come down some. wouldn't hurt to contact these guys and let them know that there is some interest in the product. i sent an email, and intend to follow it up with a printed letter, detailing the need for a consumer grade diagnostic tool which can reset TPS values. regards, dean | ||
| Fst_tyms |
I'd but one if it was inexpensive | ||
| Fst_tyms |
buy one! | ||
| 2k3lightning |
I agree with the masses. Make it affordable with the TPS reset capability  | ||
| Mikep |
I would like TPS Reset, and AFV Reset (Adaptive Fuel Value). AFV's less than 100, mean that the fuel system needs to be a little on the lean side in order to achieve Stoichiometric. Greater than 100, means the system needs to be on the rich side overall, to achieve Stoichiometric. You can look at AFV and understand if the changes you made to your bike caused the ecm to adjust the fuel a bit leaner or a bit richer. AFV = 100 is just the base starting point. I feel that $99 is a fair price for the tool. mikeyp | ||
| M1combat |
You would think that someone would build something as simple as an O2 sensor that's capable of fooling the ECM into thinking it's running lean but running stoichiometric... | ||
| Captainplanet |
M1, Sure you could. The problem is that the xb runs in both open and closed loop. So you couldn't effect the entire rpm range that way. | ||
| Bad_ass_bolt |
I'm sure this has been asked before but do you have to reset the tps? i am ready to install my race ecm, k&n, xb12 box cover and a pipe. | ||
| Fst_tyms |
I did reset mine when I put the race kit on. | ||
| Captainplanet |
If you are putting a ecm on your bike that has not been on your bike before, then you need it reset. | ||
| Stot |
You can stick a resistor on the O2 wire and richen the entire rev range, you wouldnt be able to isolate areas of the map though. Open closed loop n all that, doesnt matter this is just a statement to define when its taking readings for adapting the whole map up or down. Fool the ECM into thinking its weak and it will richen the entire map and the open/closed loop will take care of making sure its that rich as the environment changes. Cya Stot edited by stot on March 31, 2004 | ||
| M1combat |
Yes you could... The "whatever loop isn't "modifyable"" loop is still adjusted by the AFV value  . What needs to happen is we need to fool the ECM into using and adaptive fuel value that is right for stoichiometric instead of 14.7/1... | ||
| M1combat |
Yeah, what Stot said. I'll check my manual tonight to see what sort of voltage we need out of the O2 sensor, and maybe do a little research to find one that will deliver that voltage at stoichiometric mix. I'm not even above taking the inards out of our O2 and replacing it with the O2 inards we need just in case the packaging is proprietary. Of course, I wouldn't do this until my warranty runs out... | ||
| M1combat |
I'm thinking it may run very rich upon startup, but anyway, back to the diag tool. Didn't mean to Hi-Jack. | ||
| Captainplanet |
M1, I thought that the system did not read the o2 sensor in both closed and open loop. Would be cool to try change the output. | ||
| M1combat |
I'm not sure that it reads the O2, but I think that it is still modified by the adaptive fuel value. I think the AFV raises and lowers the fuel curve but doesn't change the shape. | ||
| Unibear12r |
It reads the O2 in closed loop but remembers that value for the next open loop run. Thats why the bikes handle altitude changes so well. Unless you trailer it there. Then it has to relearn. 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. | ||
| Stot |
M1 is spot on. the voltage output from an O2 sensor is 0-1 volt. Cant say what voltage the ecm takes as the sweet spot but it doesnt really matter and its generally 0.45 volts, lower readings mean a weak mixture so a simple resistor to take the voltage to say 0.40 volts would make the ECM think its 0.45 volts when its actually 0.5 and in an enrichened state. http://www.unofficialbmw.com/all/engine/all_o2sensor.html If I were to do this to my bike Id chuck an adjustable resistor in there. Cya Stot | ||
| Unibear12r |
Ok per service manual. 14.7 to 1 is aprox 0.48 volts. Under .41 indicates lean & over .56 indicates rich. I posted this on that last thread too. Some thought a resistor might drop the current level too low though. I don't think that would hurt the bike if you didn't do it long just run like crap & give a trouble code. But I'm not a tech either so what do I know. | ||
| Blake |
What size resistor is the big question. You need to know the current to pick the right resistor. Probably very small current. | ||
| Stot |
I think in my computer to lift the voltage to the CPU from 1.85 to 2.1 I used 30k ohm variabale resistors. again very low currents were involved and they were high resolution pots too. Cya Stot | ||
| Fullpower |
please forgive my ignorance. why do you wish to enrich the fuel mixture beyond stoichiometric? i have always had the best throttle response right near the lean limit, real close to the point of popping and coughing when the engine is cold. on carbed rigs, i run the smallest pilot jet possible that doesnt surge or cough. the main i run as lean as possible that puts faint color on plugs, and makes good power. i have found that rich mixture equals sluggish performance, dark spark plugs, and bad fuel economy. my 1458cc sportster gets the SAME fuel mileage as two stock sportsters when we ride together. my sparkplugs last all year, come out clean, and i have not melted any stroker pistons in 25000 miles. |
