| Author | Message | ||
     Johnboy777 |
I burned in the Xopti EEPROM and TM’s square idle (76F/71R) yesterday evening. Re-set the TPS and AFV and did the 5-mile at a steady 3,500RPM as well. Seems smoother and revs easier to me...very cool! Temps were in the mid-forties One thing I did notice about TM’s square idle, that I failed to mention before, is that with it I can ride under 20MPH without all the jerkiness. This seems counterintuitive to me because I thought the square idle would only effect the ‘idle’. I noticed this both with my stock EEPROM and the square idle and with Xopti’s EEPROM and the square idle, as well. When I got back from my ride, oil temp was almost 10deg. cooler than usual. I’ll need to confirm this with more rides, but, according to EG’s dipstick temp gauge, that was the case initially. Re-checking everything, the AVF was right at 100%. I have yet to do the cold start test to see if it holds an idle from cold, so the jury’s still out on that aspect. Even if it doesn’t, the overall effect of mod more than compensates. On a sad note (Grrrrrr!), still had the cough/sneeze coming off idle and accelerating, granted, it was less, when it did happen, and happened less frequently, at least this was the case from my initial 45min. ride. There again, my bike is completely stock. Comparing the fuel maps side-by-side, the Xopti fuel map has a number of value changes compared to the stock fuel map. This is the case when comparing the EEPROM as well. At any rate, so gar, so food.  . | ||
| Treadmarks |
Great to hear everything is working out for you JB. EG's temp dipstick is the bomb..Way to go Brother EG.  On the coughing and sneezing. I have tried about everything to eliminate this, with quite a bit of success. Wires and plugs won't make it go away, but did help a little. A top end rebuild won't make it go away either. Free flowing induction and exhaust helps alot, but you will still get the occasional sneeze. Heat barrier on the inside of the right (hot side) frame rail helped. Xopti's EEPROM has a much better accelerator pump like profile and that made a big difference. The only time I will get a sneeze now is when the fuel is hot from a previous ride and/or the engine is below operating temp. It is easy enough to throttle around the sneeze by using the accelerator pump feature, just modulate the throttle to give more umph on take off. By the way, next time you have the air filter off take a peek inside your throttle body under the throttle plate. I bet you have a fair amount of oil residue due to low rpm reversion characteristics of the big twin. If you do, then cleaning your throttle body may be in order. Mine does this when I spend alot of time in traffic or lumping it around like it is a softail. | ||
| Davo |
Treadmarks, Have you tried disconnecting the white speed sensor wire and then checking the AVF after making a significant fuel map change? | ||
| Treadmarks |
Davo, Whaaaaaaaasup. I have not tried the white wire trick yet. I remember the threads from a year or so ago, thought the understanding was that it may have an advantage on th Euro 9 but not the US 12. | ||
| Davo |
Treadmarks, Give it a try. According to my results the stored AFV never changed after removal though closed loop values responded as normal. If the O2 was disconnected as well prior to booting then closed loop was defeated. If the O2 was disconnected after the ignition was turned on then the AFV started to drop quickly to the low 80's. Just something to try on a rainy day in the shop. By the way I saw several Uly's in Daytona. Did you make it up for the day? | ||
| Uly1080 |
Davo or Tread, can you post the link to the original write up? Thanks. | ||
| Treadmarks |
http://www.badweatherbikers.com/buell/messages/327 77/248300.html | ||
| Uly1080 |
спасибо. | ||
| Johnboy777 |
I wanted to do my last test, the cold start idle test, ASAP, to finish my testing of the new EEPROM, so I fired up the Uly this morning - it was 35deg or so out. My poor Easter celebrating neighbors ... opps! With the Xopti EEPROM and TM's square idle loaded in, the bike held an idle pretty well during cold start up - no additional throttle input needed. I'm happy.  ...wait, that's not happy ... here's happy ... nope, that's content ... here's happy ...well, kinda more like giddy happy, maybe. Anyway, i'm happy. . | ||
| Treadmarks |
Alright JB. Glad the Square idle passed the cold weather test with the Xopti mod. Not that it gets that cold here, but ya never know where you might wake up at. I did a ride in Charleston SC during this past New Years holiday and it was down to 19 degrees out. I had 60wt oil in it at the time and it acted like it had a dead battery on start up, Idle was pretty low too. Looks like bumping it up a couple notches worked out well for you. Makes me think I should bump mine up a notch or two, but it runs so dang well like it is. Edited to ask how is the cough/sneeze now? (Message edited by treadmarks on March 23, 2008) | ||
| Johnboy777 |
Edited to ask how is the cough/sneeze now? Hey TM, The cough/sneeze seems better (at least from my initial run a few days ago) with the Xopti + square idle (as opposed to the stock EEPROM and square idle) but NOT completely gone. I think i might be able to modulate the off idle acceleration to lessen the cough/sneeze - i hope, anyway. I could care less about the cough/sneeze except for the fact that its bitten me pulling out into traffic several times - its a dangerous situation. IIRC, i read somewhere that this might be due to timing (the front vs. rear spread)- which is within the EEPROM, so that attempting to adj. the static timing, is not an option. But I don't understand this well enough to judge. I wish i had a place to look - EEPROM timing, fuel map, throttle body, etc. I have new Iridium plugs (9) and Magnecor wires on the shelf that I plan to install @ 1,000 mi. - i have not ck'd the static timing either, which should have been done at the very 1st. BTW, I run 94 octane Sunoco, which is about the best fuel we have here locally. What has been a really nice, and unexpected, benefit in all of this, is the under 20MPH smoothness now vs. the stock EEPROM and stock idle - and the way the RPM's no longer linger as it returns or falls back to idle - very smooth. The idle is so smooth ( i know, this sounds like BS) that i thought it had stalled out as i let off the throttle and it was just idling at a light ... damn! Hope this helps. . | ||
| Johnboy777 |
Damn TM, Found this just now ...here's what 'dmhines' says over on Buelletin Board (looks like i'm not the only one): " ...First I did the XOPTI/TREADMARK Idle Square ... works very well ... I have a nice steady idle at approximately 925-950 RPM .... No hanging throttle anymore when stopping at a light or stop sign ... the bike settles down to idle quickly ..." LINK: http://www.buelletinboard.com/forums/showthread.ph p?t=4865 . | ||
| Treadmarks |
Found this just now ...here's what 'dmhines' says over on Buelletin Board (looks like i'm not the only one): Dayuum. Woooo Hooooo...I'm nationwide. Now, where did I put those hollywood sunglasses.  No...wait...  No..dammit....  sheiit...  Naaah....I like these.  | ||
| Johnboy777 |
Oh no ...he's gone Hollywood. Treadmarks, BTW, did you go the logging route w/ Mike and send him your logs and have him fine tune your Xopti map?? Thanks, John | ||
| Johnboy777 |
 | ||
| Uly1080 |
 You should show Gunter those logs...see what he can do for you. | ||
| Johnboy777 |
just for fun i fired up the Uly this evening (35deg.), and immediately drove off, rather than letting the bike warm up, as usual. The off-idle cough/sneeze was a mofo - wow. a lot worse when cold, in addition there is a hesitation/stumble around 2,500 when cruising. da beast don't be likin' it cold.  . | ||
| Treadmarks |
If you tried to drag me out of my warm spot into 35 degree weather, I would me a mofo  too. | ||
| Tomtower |
Where do you get TM’s square idle and what does it do I have emc spy is it like it ? | ||
| Packdog |
Tomtower, TM's square idle is something that you can do with ECMSpy. It is a performance mod that you make to the ECM using the ECMSpy software. There is some information on it here: http://www.badweatherbikers.com/buell/messages/142 838/345935.html I'm not awake enough to remember which BadWebber it was, but someone wrote up a great step by step howto. |
