| Author | Message | ||
     Desertfox |
The X1 has been running pretty much perfectly since I replaced the fuel pressure regulator but I've noticed a couple of minor things. 1. AFV sets itself to 90%. I don't know for sure if this is an issue as I do live at high elevation. (Less air = run rich = ECM lowers fuel to match air) 2. The RPM hangs up briefly at about 2000 when returning to idle. I tried to reset the TPS to fix this, but it didn't change anything. To get a good zero, I backed out the screw and firmly closed the throttle to feel it stick. Perhaps that's TOO closed? In any case, besides those two issues the bike runs really well. I took it for a long ride recently and got it up to an indicated 130mph at about 6100rpm. Fuel economy is staying between 36 and 40mpg. I guess I just want to know if I should be checking for problems or if this is pretty much normal. | ||
| Hootowl |
The return to idle delay could be caused by an intake leak. Since your AFV is at 90, that means the ECM is leaning it out, which means that an intake leak is unlikely, as that would cause a lean condition which the ECM would try to compensate for by richening the mixture. How high up do you live? Might be that you do have a leak, and 100% is still too rich. Or you could just have your idle set too high. | ||
| Froggy |
1, What altitude are you at? 90% is probably about right. 2, Lower your idle a hair, that will fix the hanging high idle.  | ||
| Preybird1 |
My altitude here is 8300 feet. If your idle is hanging up it needs a TPS reset. You need to get the bike to operating temps before you even attempt a TPS reset. If you don't it will do this every time. ask me how i know. My afv sits right at 100. What exhaust and intake are you running and have you had the Ecm maps adjusted for the set up you are running? My bike has been custom built and dyno tuned and the ecm was mapped on the dyno using ecmspy. I noticed when i first had my bike and i changed the exhaust from a v&H ssr carbon fiber muffler to a supertrap with 12 disks and an open end cap. I lost a lost of low end torque and the bike ran worse. Then i swithched the intake around to a few different kinds to what would work the best. So i use a forcewinder intake and a D&D full race exhaust. So far this is making the bike make the most power. | ||
| Ratbuell |
I do TPS resets by the book on my Ulysses when I need to..and it never works if I go by the book voltage recommendation. I go by book V, then lower my idle with the set screw until it stops hanging up. It's usually only a fraction of a turn...but my sensor likes less V than the book says it should. (shrug) | ||
| Desertfox |
Ugh, I would love to try some of this advice, but the little red buell on my shoulder got the best of me tonight... I dropped the bike *cough*wheelie*cough* and now have a hole in the derby cover, a slightly bent front PM wheel and a couple other very minor cosmetic things. All in all, the bike held up incredibly well... The wheel even still holds air. So I guess I'm in the market for some parts! x_x | ||
| Kalali |
That's one way to solve the high idle problem.... |
