| Author | Message | ||
     Xbolt12 |
I have a xb12r with stock exhaust and ECM. I put the race filter on a while back and noticed a slight bit more ping on roll-on and exiting turns on the gas at lower rpm (less than 4k). The bike ran great, and had a harder hit than stock with faster revs. So.... I decided to remove the snorkel... Actually I cut the top off the snorkel and then re-used it with the lower edge sharpened with a dremel tool edge smooth airflow and used the top piece to seal the air box base to the frame. Took the bike out and initially it felt slower with less hit around 4k. After a while though the ECM seemed to re-learn and the performance got a lot better. Now the bike screams between 4k and redline! The bummer though is that while the bike runs great if you are pinning the throttle out of turns and keeping revs in the 4-6.8k range, if you try to torque your way out of a turn the pinging has gotten noticably worse (too the point I'm going to have to do something fast). I guess this proves removing the snorkel does make a difference in intake flow. It is true that it has been hotter than usual in So Cal, but the bike did the pinging even at night. The bummer is I don't have the bucks for exhaust right now, so the race ECM is out. I'm hoping Techlusion really is coming out with an EFI controller for xb's. My only concern there is that Corey James seems to be involved (for good or bad) and that makes wonder if this is for real. xbolt12 | ||
| Joojoo |
hey Bolt, My 12 pings on hard torque hits from a lower rpm...I think that they all do. Most of ther 12 owners have been complaining about that sound under heavy throttle when the motor is hot. Mine only does it when its hot...and it sounds like a tiny marble is moving around in the block....Buell must have encountered this when designing the motor. Maybe they know that it wont damage the motor at all, and decided that its fine to release... Jack | ||
| M1combat |
I'm not so sure I would say "most" Joojoo... I think I've heard it from five or six people and it's almost always when the bike is hot on a warm day. Most also suspect their fuel. Xbolt12 lives in California, and I would suspect their fuel. | ||
| Vaughn |
I know what spark knock sounds like in my car (WRX-STi) when I use low octane fuel. Can't say as I've heard it on my 12R. What I do here is lifter/rocker rattle though. I wonder if some people are confusing the two? Just a thought... | ||
| Spyder12s |
why is it that Mr. Anonymous never pipes in in these "type" of threads ? | ||
| BadS1 |
Mine has zero detonation.And I also think Gearhead has zero problems either.I just came off of 3 90% humidity days and temps close to 90 degree's.If that won't make my bike detonate nothing will. | ||
| Slowby |
with a pipe and no race ecm you run too lean in the mid range. the race ecm adj's the timing curve as well as the fuel. this is an emission controled illegal change that some people don'tneed to be involved in. and you should change the airfilter w/ a high flow one to match the proformace upgrade. | ||
| Vaughn |
Buell uses an O2 sensor during closed loop operations to maintain a 14.7:1 fuel ratio. It maintains a block multiplier value that is applied to the standard fuel map (open loop) pulse times. A value of 100 (read 1.00) means multiply the standard fuel pulse by 1 (no change), 125 multiply by 1.25, 75 multiply by .75 and so on. When you wack the throttle open the ECM ignores the O2 readings but still applies the multiplier. The valid range of the multiplier is something like 50-150 (not sure). You need to use the factory/shop tech tool to read the learned value out of the ECM. If your value is maxed (150) you are likely lean because the system cannot compensate in enough fuel. If your value is 50 you are rich. Other wise, your mixture is probably good if in between 50-150. This is the beauty of the O2. Your bike will learn the right mixture as the bike wears or is modified within reason. There is a point where the injector pulses/pressure cannot add enough fuel but this is not likely with pipe or air cleaner mods. Turbo charging would be a problem. | ||
| Trenchtractor |
I will have access to the Stealth TFi for my XB here in Australia in about two weeks... If you want more info, email me. | ||
| Fullpower |
slowby i have found the opposite to be true. with the stock ecm the midrange is fine, with the RACE ecm we run very lean in the midrange. | ||
| Blake |
Something is seriously wrong if your race ECM is running lean anywhere. | ||
| Opto |
Yes Blake a few of the XB12 race ecm's are seriously wrong, I can prove mine is too but you'd have to come to Oz to ride the bike! That's an invite. Fortunately the stock ecm does not run lean. I think XBolt is suspecting a lean condition to be causing the ping, but I feel it's more the ignition timing. When he removed the snorkel, the motor got more air/fuel leading to higher cylinder pressures and pinging. | ||
| Xbolt12 |
To all, thanks for all the input! Vaughn-It is pinging only when the throttle is whacked open at heavy loads and lower rpms (below 4k) Opto-I'm thinking you hit the nail right on the head. It's acting a lot like my car used to when I got a little over zealous on the initial distributor advance. Does the Race ECM retard initial advance slightly or alter the advance curve? The bike runs great in the upper half of the rev range and doesn't seem either lean or over advanced there. Guess I need to pull the plugs and check! xbolt12 | ||
| Trenchtractor |
Guys, I have in my posession some interesting dyno curves... I will post them as soon as I get them scanned in, but they prove in fact that the race ECM has a better mixture everywhere... So it HAS to be the advance curve causing the pinging... That being said, I also believe that the problem with mine and Opto's bike is that Aussie fuel is not as good as the fuel in the USA... Now, M1 and Blake, don't go getting fat heads over this admission from me... I still think this means Australia needs a different map... But it's not the fuel that needs adjusting, only the ignition. Oh, and I think some people would freak out... The stock ECM can get very lean indead. Perhaps the new techlusions tfi will sell like hot cakes... Interestingly, the Serco catalogue has a PowerCommander listed for the 2002 XB9R... Anyone got comments on that one?? I saw it in print... Might be a typo, but I'm onto that one... Any reason the PC for the XB9 wouldn't work on the XB12??? | ||
| Wyckedflesh |
The PCIII is the same for the X1 the XB9 and XB12. | ||
| Captainplanet |
Right when the XB9r came out, they had Powercommanders for the XB coming soon listed on their website. Then a while later, they put up a message saying they were no longer working on one specific to the XB. Then people started using the X1 power commander on the XB and it seemed to work fine. I am using the 1040i techlusion on mine. It works fine to richin up the mixture, it just sets off the check engine light now and then. | ||
| Opto |
they prove in fact that the race ECM has a better mixture everywhere... Trench at wide open throttle I don't have any probs with the 12 race ecm at all. Thats the only place it doesn't give me grief except under 4500 rpm WOT (pinging). It would be fine on a race bike but for a street bike...it just doesn't cut the mustard as far as driveability goes. (Message edited by opto on September 14, 2004) | ||
| Xbolt12 |
Trench and Opto, The TFI cured all the pinging completely. Man what a great product. Only issue was they shipped with the wrong connector for the 02 sensor (wrong sex). No problem though, it is a GM Weather Pack connector and is widely available. xbolt12 |
