| Author | Message | ||
     Pontlee77 |
I dont know ifit's of help but i found thsi: over the past year or so...a lot of people have complained about a stutter when at a constant cruise RPM after doing a remap or whatever... as of now, unless youre creating your own AFR tables in VE analyzer(which i recommend, but is a lil more involved), and youre using the afrBins1 or 2, there seems to be a slight hesitation or hiccup in that area. heres a quick remedy: (assuming your map otherwise is in good shape and youre clear on the operation of its functions) in the cells for cruise, generally from TPS values 22-40 or so, and RPM 1900-2900, should be 6 or 9 cells there, which is dependent on the manipulations of your axis if youve changed those. But, after VE analyzer is finalized and youre done with the mapping, for the rear cylinder, add about 3-5 PERCENT of the fueling in that area. copy THOSE values to the front map, and then add 10-14 PERCENT to those. its important you do this as a ratio and not add just points to the original values. (the multiplier in the map editing screen will do this for you if you enter 1.12...corresponding to an additional 12% to be added) the rest of the map can be done with the copy rear to front and add 2 method. thats fine. i think its predominately a 1203 issue, and ive had good results with a few people trying it that way. runs smooth and steady now. you can then go to the adjacent cells and taper them off to make a lil smoother transition. flip between the 3d view to kinda see what i mean. hope this helps a few of ya on here! the question is, any one has done it? if i send you a copy of my friends eprom, could some one modd it to this, my friend is willing to pay the labour. Thanks. | ||
| Griffmeister |
Stuttering at constant speed? Sounds like the main jets are worn out from the metering rods vibrating in the holes. Oh wait, there's no Amals on these bikes.  | ||
| Uly_man |
Pontlee77 - Are you saying that you have found this information some place and you want to try it on your friends ECM/bike. | ||
| Pontlee77 |
Yes i found it in another forum and after changing alls sensors, checking all grounds, and doing all the things we could possibly do, even having help from Buellistix1, we have had no luck, i think in all xb's after some time the develop a bit of this on the 3k range, on his bike it goes from 3 k to 4,5k range, and truly we havent seen any way to solve it, so we would like to do this as one of our last chances. my knoledge of ecmspy is not good enough to work on the maps, my friend Buellistix1 he is having health problems so, i'm not in the position to ask him to make those changes, so i was looking to see if some one could do those changes, and pay for the work done, if it doesent work, there will be no problem. Thanks. | ||
| Uly_man |
Pontlee77 - I see what you are trying to do. First we will need the bike type, the build date off the frame and the ECM version. Second all the parts you changed, any aftermarket parts fitted IE air filter/new can, etc, has the static timing been done, has any part of the ECM map been changed and has the original OEM map been saved with ECM-SPY. Also as much detailed history of the bike you can give IE did he have it from new, how long has it done this, etc. Stock these bikes WILL run fine and miles should not change the running. What you are trying to do is, for many reasons, a little complicated. I would join ECM-SPY and ask Gunter to mail you the stock OEM map for the bike and flash it to the ECM. Gunter is a great guy and he may be able to do this for you. Offer a 20 Euro donation to the charity they support as good will. | ||
| Pontlee77 |
It's a long story, he bought the bike new in august 2007 (i'll get the month of production when i see again the bike)he had since the first day problems of the bike suddenly dying, so the check all, same problem continued, they changed wire harness, and the did it wrong and it melted, so a second wiring harness was installed, some time later he got a hp exhaust with a race ecm and the screaming eagle air filter, then he had an accident at about 70mph with a dog the frame and half of the bike was destroyed, this sutter he is not sure but has been on the bike since day one, as we returned to stock and the sutter was there but a bit less, we changed to a buell race exhaust with a 2007 race map, and it was adjusted a bit more by a friend, but hus sutter is between 3000 and 4500 revs, it's like if the bike was making little jumps, so we have done all sorts of tests, and changed all sensors, and all seems to be fine. today he rode and said it was running perfect, but that bike is a Bi..... and is draining the battery in less than a 30mile ride. so + 1 problem more. | ||
| Uly_man |
Not a 100% but it sounds like an electrical problem like a damaged connector or wire that vibrates at a certain revs. A stutter/lurching is not the same a "flat spot" in the rev range. A flat spot is as it sounds. You get to a throttle point and the bike will not "go" until you pass through it. That you may be able to "dial" out in the ECM. Given it has had a second ECM and it was the same it seems to me its not the ECM. "since the first day problems of the bike suddenly dying, loom changed" if it has still had the stutter it must be a part break in a wire or a connector block pin some place else. These "part breaks" are what happens in the headstock loom and there are at least two wire joints in there. Or a bad crimp on a connector block on say the bank angle sensor, clutch switch, LV side of the coil, etc. All of which and many more could be the problem and will NOT show up on the CEL or in the history. It could be any dam place. I rode my 06 bike for two years before I found my problem and that was partly luck so I do not envy his problem. | ||
| Pontlee77 |
I see what you mean the strange is that when we retarded a bit the timing due to the pinging the range on where this problem happened increased, went from 2500 to 4k up to 3k to 4500. It's a very weird thing, i have a theory: good wife=bad bike, bad wife=good bike. My 06 has truly no problems except for the TB broken shaft, the rest has bene fine, nothign major just the general things. Thanks for the reply. | ||
| Uly_man |
Pinging or what we here call "pinking" is normally a timing and/or fuel issue. A flat spot is something else as is a stutter/missing of the engine. "theory: good wife=bad bike, bad wife=good bike." Err NO. It is just a bike and as such it can be fixed. You can not fix people no matter what anyone says. Given what has been/happend to this bike it is way, way to complicated to fix over the net and there is little more I can help you with. Best of luck. | ||
| Pontlee77 |
Your ideas are always of use, and it gives me other options i didn't have in mind before |
