| Author | Message | ||
     Ar15ls1 |
I installed a new Latus racing muffler(Awesome by the way), buell race ecm, and air filter. I made an appointment to bring the firebolt to the Harley shop to have the tps sensor reset just like the instructions said to do. My only problem is the that bike runs great. I have no problem with it popping, missing, or even a other than normal rough idle.The power it picked up is pretty damm good to. I am still going to take it to get the tps sensor reset just to be safe, but has buell done anything different to the new ecm's that make them any different. I have heard all kinds of things about peoples bikes running very bad or not even running at all. I am just curious if anyone knows something That I dont! | ||
| Stormfool |
Just curious--you installed the race ECM and didn't rezero tps yet? And bike runs fine? | ||
| Ar15ls1 |
Yes, thats exactly what I did. And yes the bike runs great. I only drove it for about 20 miles , but so far no problems... | ||
| Fasteddieb |
FWIW, mine ran fine with just the race muffler, and with the race muffler and race ECM. The air filter shouldn't really make a difference. I had the TPS reset done to be safe. A lean condition at a certain rpm could hole a piston. Don't know why some ECM's seem OK out of the box and some don't - maybe a tech could speak up? | ||
| Dynarider |
Yes it appears that sometimes the bike needs no tps reset & others will. Its a coin toss. I can switch back & forth between ecm's with my X1 & the bike would run fine with either one with no reset. I would still get it reset & then it would run even better, but it wasnt unrideable before hand like I hear some folks end up with. | ||
| Blake |
If your new ECM happens to be programmed with a TPS reference voltage that actually corresponds to the voltage output by your bike's TPS (throttle 100% closed position), then you are lucky and your ECM is by shear coincidence precalibrated for your engine/TPS. Once an ECM is calibrated for a particular bike (TPS), and as long as the TPS has not since been disturbed, the ECM can be reinstalled without any recalibration. "TPS rezeroing" simply consists of uploading your bike's TPS voltage output (for throttle 100% closed) into the ECM. New ECM's come from the factory programmed with a nominal TPS reference voltage somewhere within the operational range (I think between 0.0 and 0.5 VDC). If you are lucky, your bike's TPS reference voltage might correspond exactly with the nominal value that each ECM is shipped with. Better to be sure and have a new ECM reflashed/recalibrated. Then you will know you have not left any performance on the table. It would be interesting if your technician could read the current voltage reference in your new ECM and also then after performing the "TPS rezeroing" tell you what the ECM's new TPS reference voltage is. | ||
| Spiderman |
Get it reset regardless. Your ECM just happened to be within spec. You may be running a little rich or lean either way it is bad. SO head on down or you will be paying for more than a reset. | ||
| Ar15ls1 |
I am taking the bike this afternoon to have the tps reset. I will see what I can find out. Thanks for the info guys. | ||
| Ar15ls1 |
I picked up my bolt today at the dealership after gettting my tps reset and the bike dynod only to find out that I had to turn around and bring it right back. The bike was not making any power above 5800 rpm and was surging at idle. This explained my 81 rwhp at 6900 rpm on the dyno. The service manager said that the tps must not be quite right. I asked him why did they only rev my bike to 6900rpm on the dyno and he replied that is all it had. Needless to say I had to leave it overnight again. The service manager said he will have it right tomorrow. | ||
| Blake |
Sounds like your service manager is full of it to me. | ||
| Dynarider |
Blake is right, have had more than 1 instance where I would pick up my X1 & they would say "all set, everything is fine". I wouldnt get 2 blocks & could tell it was running like shit. Had to go back & pitch a bitch fest to get them to actually fix it correctly. | ||
| Ar15ls1 |
Yeah I know. I am going back in a couple of hours to see if they got it right. The service manager did say that he would redyno the bike and would rev it to its redline this time. He told me if I keep driving the bike like this (running it all the way to 7300-7500rpms) that I would not have the motor for long! | ||
| Kcbill |
Why do you think you need to rev it above 7? If it has a stock motor thats as high as I would say you should go. If it is stock it will stop making power at about 6900. There is no reason to go to 7300, or 7500. Your lower end will not support that for long nor will your valve springs. That is what the service mgr. is talking about. If he truly knows your motors capability. | ||
| Kcbill |
OOPS, my apology I didn't catch that this is a firebolt your talking about. | ||
| Ar15ls1 |
No problem! I have seen enough dyno charts to support revving the motor to 7300-7500 rpm. I even believe that the motor would probably make power to 8000 rpm. According to Buell these motors should live at these high rpm numbers. The flywheels are even lighter than the older Buells. The valve springs are copied off of the "NASCAR" design. Although this still does not impress me to much, the springs are still better than they used to be. This is only a few of the many things Buell did to help these bikes survive high revving abuse. I guess only time will tell if they all work! | ||
| Ar15ls1 |
I got my bike back and yes the dealership had the tps sensor setting wrong. They did correct it and also dynod the bike again. They still refused to run it up past 7000 rpm though. I was not there at the time to argue with them. But the bike runs much better and I found out that my Latus muffler makes a little more power than the buell race muffler. All in all I am alot happier today with my bike than I was yesterday. | ||
| Slackerbuell |
I got a race chip for my X1 for x-mas and popped it in. It runs great. I am going to get the TPS reset this weekend or next. How much does it cost? Thanks | ||
| Ar15ls1 |
It cost me $48 to have mine reset on my firebolt. | ||
| Blake |
"I am going to get the TPS reset..." Just for fun, do you know what that actually entails? Do they even touch the TPS? | ||
| Spiderman |
Ohhh Christ here goes Blake. I know they don't touch the TPS at all (unless it needs to be replaced) But even techs call it reseting the TPS. They actually flash the ECM to calibrate the ECM to the TPS sensor. First you must back off the Idle screw till it reaches 0.0 deg. Then snap the throttle closed to make sure that the butterfly is at zero. Reset the ECM, TPS function (which BTW says reset TPS on the Scan tool) Once you are done reseting the TPS. (or flashing the ECM) Set the idle screw to 5.8 deg. Start Bike and let warm to operating temp. And set the idle to 1050. | ||
| Ar15ls1 |
No shit! Thats why my idle was so high when I got my bike back. I set it back to about 850rpm. Will this affect anything? | ||
| Spiderman |
No 1050 is just what Buell says. | ||
| Anonymous |
Yes, setting the idle speed too low will affect the performance. Throttle response will suck and the cold start circuit will struggle to operate. Set it too high (above 1100 RPM) will make the bike react like an intake leak (slow to return to idle). Set it at 1050-1100. It is set there for a reason. R | ||
| Cyclone1 |
Also your charging system and oil pressure won't be overly happy with a low setting like that  Frank | ||
| Spiderman |
Sorry I should of put a comma in there I ment No, 1050 is what Buell says. As in don't change it. My bad. | ||
| Ar15ls1 |
Gotcha, Spiderman. I knew what you were saying. I set it at about 1000rpm. It works,I have no problems, and I like it right there! | ||
| Spiderman |
It is hard to keep it at 1050 even with the scan tool. I try to peak it at 1050 | ||
| Anonymous |
Spiderman, It actually would be better to peak it at 1100. Look for it to hover at 1050 and peak at 1100. After about a 5 mile test ride is the best time to set it. | ||
| Spiderman |
I did that on a XB (1050 that is) and that thing not only runs like a champ but, gets close to 62 mpg. BTW what it with the anonny button again. | ||
| Court |
>>>>what it with the anonny button again Necessary and valuable benefit to all of us. Court | ||
| Rick_A |
It's unnecessary unless there's a damn reason to use it...like your employment or welfare depending on it. Otherwise, giving general info and tips under anony guise is just plain annoying. | ||
| Tripper |
dingdingdingdingdingdingding....winner winner winner |
