| Author | Message | ||
     Avalaugh |
To start with there is nothing wrong with the race ECM . I think my problem is fuelling related. With the stock ECM installed the bike runs ok ish with only slight hesitation occasionally under load and seems a bit down on power. The AFV's were 105 F & 135 R, which brought on a EM light P1047 F+R system error. After swapping over the injectors the AFV's are now both at 136 F&R and this code is gone but I have P0112 IAT system error and U0001 comm error. When I install the race ECM the bike is impossible to ride, backfires and has serious hesitation under any sort of load, but shows no fault codes or EM light ?? I have checked and reset TPS and all is fine there. I need to know which parameters are locked on the race ECM compared with stock as I think this is where I have a problem. A component is working within stock ECM parameters but not compatible with the race ECM. I have swapped out O2 sensors but still the same, I have also removed the main engine loom and checked for continuity but again all seems fine. Any ideas please, this has been going on for a few months now  | ||
| Bextreme04 |
Sounds like a loose connection on the intake air temp sensor or maybe a bad sensor. Check the connection and see if there is someone near you that will swap out a known good sensor to see if that fixes your problem. | ||
| Colintornado |
Avalaugh, PM me your mobile and when I get a chance I will ring you and bring my IAT down to you to test against yours if you want to try that? I live in gravesend. | ||
| Avalaugh |
Colintornado your a life saver  that is exactly the kind of thing I need, I'll PM you my number, maybe try that and go for a ride together. A question though, the ambient temp on my bike works fine, this reading is taken from the IAT ? | ||
| Avalaugh |
I should also point out that the front fairing was completely broken off in a low side I had at track last year. Can someone point out what electronic components are set when using the race ECM, rather than self adjusting with the stock unit. | ||
| S21125r |
I recall it being stated that the Race ECM reset AFV back to 100% on every start. Is it possible you have an intake leak somewhere that the stock ECM can adjust for, but Race will not? | ||
| Avalaugh |
I had heard that too, I have taken the throttle bodies off twice now and cannot find any leaks, it is this kind of problem though | ||
| Firemanjim |
With an AFV of 136 it means the ecm is adding 36% more fuel to get the targeted fuel ratio,you have something causing a bad lean condition. | ||
| Avalaugh |
How's this for an idea, by me swapping my injectors it balanced them up to the same reading all be it high, if I had a faulty injector would it cause this ? Or would a faulty O2 sensor be the cause of the fueling issue ? Although I have swapped the front o2 already which was the cylinder which read 105 but now reads 136 after the injector swap. | ||
| S21125r |
Possible - especially if the injector is not delivering the full load of fuel for a particular pulse. Engine senses it as lean and then bumps up the on time more to compensate. Low fuel pressure would do it too, but I think you'd get a CEL if fuel pressure dropped out. | ||
| Avalaugh |
So can I get the injectors tested ? Or is it just buy a new one and hope for the best. | ||
| Avalaugh |
PM sent Colin  (Message edited by avalaugh on March 14, 2011) | ||
| Spectrum |
Also check that the Baro Sensor is not installed upside down. The nozzle should be facing down. Similar problems have been reported if the sensor is installed with the nozzle facing up. | ||
| Avalaugh |
Have checked baro and all appears fine. Littlebutquick has a complete wiring harness which I have bought from him, going to install that as there is a small chance mine was damaged in the crash I had last year, also going to buy some secondhand injectors from eBay and swap them out, if that don't fix it I'm at a loss | ||
| Anonymous |
Here is a little feedback from E_B_R for you. There could be a lot of different things causing this, and there is no indication here of the configuration of the bike. What is not stock on it? We would guess at least the muffler isn’t, but what does it have? Without knowing more it is really throwing darts at a board, we could trace those symptoms to a couple dozen things. Here are a few general comments “AFV's were 105 F & 135 R, which brought on a EM light P1047 F+R system error. After swapping over the injectors the AFV's are now both at 136 F&R and this code is gone but I have P0112 IAT system error and U0001 comm error. ” The big delta in the front and rear AFVs tell you something is going wrong or the you have a muffler that is way mismatched for the cal. Without knowing that answer to the muffler question you could go way off in the weeds trouble shooting this. If it is a stock muffler the big delta usually means you have an issue with one cylinder, in this case the rear. It is either not getting enough fuel; plugged/damaged injector or damages wiring, or has excess oxygen; intake leak or if the ignition is missing it will detect the unburnt oxygen and add fuel. Could be a plug, coil, coil wire. You swapped injectors and both AFVs went up. Initially it seems like the issue followed the injector, and you just didn’t run it long enough for the rear to relearn, but then got all sorts of other codes unrelated to swapping injectors. Based on this and the comment that you crashed hard enough to rip off the front fairing we think you have harness or connector issues. “I recall it being stated that the Race ECM reset AFV back to 100% on every start” That is just straight out inaccurate. Before we can really help you we need to know more about the bike and exactly what calibration you have, and exactly what is changed on your bike from stock. “the race ECM” could refer to any of a dozen different cals. | ||
| Avalaugh |
Well here goes then..... The E.B.R ecm was for a stock can, this is how it was when i crashed on track. And bike was running ok but did on occasion hold back and feel down on power. Since the rebuild i have been riding the bike and it became even more down on power and got so bad i put the stock ECM back on. This improved the bike greatly (not perfect) but had these codes with a EM light      With the race ECM it runs poorly and i have this showing  Have swapped out the O2's and no change, then swapped the injectors and this balanced the AFV's up which is why the EM light has gone off i presume ? Still runs bad with race ECM installed. I have also since found a damaged wire coming from the ignition barrel which i have repaired. I am concerned there could be other broken wires although i have tested loom for continuity i have another loom on the way to me which i will fit just to be sure. I'm currently running stock exhaust, stock filter, stock ECM while trying to fix this problem. I will also buy a used set of injectors from ebay so as i can eliminate them too. The IAT had been relocated to the front fairing prior to the crash and was ripped off, i have repaired these wires too and the ambient temp readings are spot on. I have taken the throttle bodies on and off during my fault findings and cannot see any reason there would be an air leak. My thoughts are faulty injector, possible damaged loom. During this period i have sent the race ECM back to E.B.R .or a reflash to a drummer tune as i have a new exhaust to go on once this problem is solved, Thanks for your time, and i'm greatly thankful for all your inputs. Just for an idea of the crash   | ||
| Court |
I hope you are also sharing this information with the folks at: tech@ebracing.com Just saying . . . It's one thing to discuss it here to kick about ideas but in terms of specifics it's akin to pulling into Burger King and asking them to call your order in to McDonalds. I'd just hate to see you get some advise, do something and then find out it was way off track. If you haven't written them. . . I'd cut and paste this as a start. Court | ||
| Ratbuell |
+1,000 to Court's advice. I've been around bikes for a little bit, and I've screwed things up and had things go my way. When I got a race ECM for my Ulysses, I was having problems on install. It acted like a bad TPS reset...but I've been around bikes, I've been around Buells for years, I *know* how to do a TPS reset. Except that I didn't. Michael at Erik Buell Racing took time (and patience), and straightened me out. The bike runs like a scalded dog now, and I predict it will CONTINUE to please me. Once I get it home from Florida. Back on topic - send a concise message to tech@...don't ramble like this post has  Facts. Timeline. Specifics. Use part numbers where you can (like, for the injectors - which one went in which cylinder, etc). NO speculation, let them do that. They can, and will, if you present them with ALL the facts, accurately and objectively. | ||
| Avalaugh |
I won't email E.B.R until I know 100% that the loom is fine otherwise there are too many variables and they are busy people making great stuff for our bikes, don't want to waste there time. | ||
| Court |
Cool. Just wanted you to know that folks at Erik Buell Racing **may** check in here from time to time . . . but they certainly don't monitor any threads to provide service. | ||
| Easyrider |
Avalaugh When you swap back to the stock ecm, how is the bike running then.... and are there the same trouble codes | ||
| Avalaugh |
Bike runs ok on stock ECM, with the occasional hesitation on load, but does feel a bit down on power. The codes above are with the stock ECM. With race ECM installed bikes runs very badly, backfires and lots of hesitation on load, but shows "no codes" as picture above ? It's not the race ECM at fault, I'm just using it as a diag tool to illustrate the fault codes only occurring with stock ECM. | ||
| Easyrider |
oke, - Bike runs ok on stock ECM, - Bike runs very badly on Erik Buell Racing ECM Correct or not?. | ||
| Easyrider |
Did you ever try to get your hands on a ECM from a fellow Buell rider same bike and just swap them and see what happends?. Why don't you go to the dealer, ask them if they can reflash your stock ECM, and put it in and see what happends (-: It is possible that your stock ECM is damaged by the crash, i had that before, that is why you need to be 200% sure it is not the ECM, the best way to check is using a good running ECM from somebody else even after the reflash of your stock ECM it is possible that it stay damaged.. I would suggest you send the race ECM to Erik Buell Racingcompany put in a letter with your setup - airbox stock yes no - headers stock yes no - exhaust what type or how it is changed etc etc etc and let them reflash it to be 200% sure you have the map for your setup.. if after swapping the stock ecm (the bike will not run wel but wil run) the biek runs oke the problem is in the ecm, if not the problem is in the bike (-: | ||
| Avalaugh |
Received the E.B.R ECM back just a few weeks ago as thought that too, they have reflashed the stock tune for a drummer to match the exhaust I now have ready to be installed. I am 100% confident it is NOT either ECM at fault here. | ||
| Avalaugh |
I think the problem will be in a circuit which is fixed or not monitored by the E.B.R compared with the stock ECM. Race ECM installed - bike runs Very poorly , back fires with huge hesitation upon throttle openings with no fault codes or EM lights Stock ECM installed - bikes runs ok ish, bit down on power with occasional hesitation under load and the above fault codes. | ||
| Colintornado |
When I get to your house, I can bring my ebr ecu that is flashed for standard exhaust,we can see if it then runs OK. | ||
| Xoptimizedrsx |
Is the quick shifter on in the race ecm. If so and not connected is causes issues till a couple wires rerouted and connected. I dont remember exactly what wires were moved and pluged into the bas plug but that fixed our issue... one of the buell guys did it last year at the track while I was on pit road for a different race with a different bike and rider... Maybe they will post up... could be pit lane speed related as well... I see that as well in my PCM tool and different maps for the 1125. as AMA maps in the disk files. other than that I'm sure its a setting somewhere thats overlooked. the txt file guide in the pcm disk is a little hard to follow on a few spots IMO. | ||
| Avalaugh |
I never mentioned the quickshifter in any comms with E.B.R, they know its a road bike with the few basic mods we all have. So i presume its off. Colin, i'm gonna try to get my bike together this weekend, but if you want to come to me on Saturday and let me try my injectors and race ECM or your bike that would be fantastic, as mine still has the loom in bits let alone the rest of the bike. | ||
| Avalaugh |
Thanks to all who have contributed to my ongoing problem. But finally i have sourced the problem, as thought i have a faulty injector. Have ordered a pair from Erik Buell Racing today. A big thanks to colintornado for letting me fit my parts to his bike today. With the injector i thought to be faulty fitted to his bike it ran like a bag of shit. This problem started summer last year and has progressivley got worse, but with the stock ECM fitted it was still rideable, and only in the last few weeks has the EM light been on. So this could definitely be a problem to remember if your bike feels a bit flat, get your injectors checked and cleaned. (Message edited by avalaugh on March 19, 2011) | ||
| Avalaugh |
New injectors installed today, bike runs like a dream now |
