| Author | Message | ||
     Guilhem0018 |
Hello, I have reflashed my ECM stock 2 times and even before starting engine I get the following AFV values: Front: 75 Rear: 99.5 I'm full stock. The bike is running OK, temperature below 88°C. I have ran 40kms since last reflash so maybe not enough to get AFV adaptation Do you think these values corrects? | ||
| Dktechguy112 |
stock exhaust and stock air filter? reset the AFV's and then re-check them. | ||
| Zac4mac |
I can't imagine those are good numbers, especially if stock. Only thing, France got de-tuned motors. No idea how that affects AFV. Ride it more, pick a "warm" day if possible, the ECMs don't seem to update on cold days. Z | ||
| Froggy |
The French bikes have different throttle bodies than the rest of the world, if you have a flash for a bike that has the normal throttle body, that may be the cause of your issue. | ||
| Guilhem0018 |
Hello, yes the moto is a french one so there is just a limitation of the aperture of the air admission block. Full stock air exhaust etc? everything is stock and the bike has just been checked for valve clearance oil change etc... | ||
| Alex |
If those numbers appear after reflashing they are obviously in the data set that You burn onto Your ECU. Where did You get that data set? What software are You using to reflash the ECU? Can You get into the data set with Your software? If so why donīt You just change the AFV values to 100 for both cylinders? | ||
| Guilhem0018 |
It was my saving of my own ecm with "ecm read" I use tunerpro to tweak the datas but I can't setup the default values (I think) But there I have just reflashed my stock ecm which was saved somewhere on my laptop. Of course I have compared it to another stock ecm because for a while I though I flash the wrong one, but no this is the stock original ECM. I could burn an other ECM like EBR and so, but I feel the bike running well, so I'm just wondering if these values are common. (Message edited by guilhem0018 on November 20, 2011) I have tried to run at 4k rpm 3rd gear for a few minutes, but the AFV value doesn't change. (Message edited by guilhem0018 on November 20, 2011) | ||
| Guilhem0018 |
Just to complete my question: I had once a DTC 1047. But for the time being it has never happen again. The fuel consumption seems OK and the bike is running quite well although sometimes it seems hesitating when accelerating. | ||
| Avalaugh |
Have you tried some fuel treatment ? run a few tanks with it in and see if it helps. | ||
| Guilhem0018 |
Sorry but what do you mean by fuel treatment? | ||
| Battyone |
Probably best to go to UKBEG and ask Gunter or Pash,but as you've got restricted throttle bodies,then it's perfectly feasible that those afvs are needed. It's my understanding that the afv is used in the open loop sections of the maps and is set by the infomation learnt during closed loop. So if the ego corrections pull 25% fuel out of cyl 1 to get the correct air fuel ratio then once out of the closed loop zone it will continue assuming that the map is 25% too rich,so uses 75% of the map values. Can you log the bike while riding? I use ecmspymono and megalog viewer | ||
| Avalaugh |
Fuel additive/fuel system cleaners. In the UK we have REDEX but there are many other makes too | ||
| Guilhem0018 |
Hi, Yes I have tuner pro RT and I have logged while ridding. I saw the front AFV value goes to 78... but came back to 75. I can send you the file, it is very easy to read with tuner pro and maybe could you detect something? If agree, please end me your e-mail and I will send it. Someone could post the values of interest and their spec? (Message edited by guilhem0018 on November 27, 2011) | ||
| Battyone |
I haven't got tuner pro I use ecmspymono. But when you're riding and logging does the bike run ok? do the O2 sensors record sensible figures? don't know if i can read your logfile in megalog? what format is the file? | ||
| Guilhem0018 |
Hello, yes the figures seem all right on both cylinders. i am wondering what could make the front injector working too much without any dtc? You can read my logs with tuner pro which is free http://www.tunerpro.net/downloadApp.htm | ||
| Battyone |
G I'm not sure you actually have a problem.Your ecm is just doing it's job. I have a couple of "race"maps where the rear cylinder fuel map has been richened up everywhere,but the front looks standard.When you check the afv you find frontcyl 110% rear 100% so ecm is increasing front cyl fuelling to "match" rear...at least thats how I think it's working... | ||
| Guilhem0018 |
Hi again Battyone, But unfortunately my other french fellows do not have a so huge difference between front and rear. Furthermore a few weeks ago, I had an issue with a too high fuel consumption. This issue has existed since I got the bike and has been solved by itself by unplugging replugging some wires... that's why I'm wondering if somehing remain wird within my wires... That is why I post on this american forum as the french guys have some delay in term of knowledge around 1125 | ||
| Alex |
It probably has nothing to do with the fact that it is a french bike. Nevertheless it is pretty strange. I would expect maybe a P1047 fault telling You that the AFV values differ too much. If You want to be sure what the system does You need to measure actual AF values in the headers (e.g. on a dyno with wide band system)and check if Lamda control is working correct. It might be hard to tell where a problem exists only by looking at the EEPROM data. I normally check those systems on the dyno with manipulating data or sensors to see how the system reacts. You may want to test to set to rear AVF to 100% and see what the bike does and what AFV will do over time. It should be doable with TunerPro. You just need to find the correct parameter and set it to 100. | ||
| Battyone |
Sorry G,i'm in UK and only just getting into ecmspy. If you had something weird in your wiring I'd expect trouble codes to be shown. I reset afv on one of my tuned eeproms and it reverted back as soon as I rode it. So I'm as "blind" as you. I'm talking regularly with a couple of people with much more experience,I'll see what I can get from them. But I would advise going to UKBEG...http://www.ukbeg.com/forum/index.php Register introduce yourself and get on the technical section to ask your questions Nige 1125r 9.95@132 | ||
| Guilhem0018 |
Hello, When i had the autotune on the bike, it has really difficulties to find the right setup. Always leaning the trims and changing. Hard to stabilize, as I think the stock system although disconnected from O2 sensors continued to modify values... Today, my fuel consumption is quite low and the bike is running pretty well, so I will wait a few months before trying to solve something which in fact is giving good results. In fact I have 2 other O2 sensors that I bought on e-bay, maybe I could test one to see if I get same behaviour. | ||
| Battyone |
How have you "disconnected" the O2 sensors? If done correctly then you won't have any closed loop so will have to run only off the maps,so shouldn't make any correction from one run to another. Nige 1125r 9.95@132 | ||
| Guilhem0018 |
I have just disconnected the O2 sensors and replaced them by the dino wideband sensors connected to the autotune modul itself connected to the power commander. Eg when I tried to setup the autotune AFR value to 14, the autotune proposes a configuration according to what the wideband sensor were reading into the headers. It worked for a while than after a few rides, I don't know why, it stalled. With tuner pro, I saw that one AFV value, I think the one corresponding to the rear one was changing!! So I inferred that this modified the ECM fueling and that could explain why the autotune setup was not reliable. To sum up the stock system was playing against the power commander or the contrary | ||
| Sportster_mann |
How close are you to Twin Motorcycles in Holland ? - http://www.twinmotorcycles.nl/index.asp They have a workshop and may be able to help you ... |
