So after a long day of riding we are coming back thru downtown cincinatti. Lots of stop and go, long waits for pedestrians crossing the road ect.. Well by the end of the strip my bike goes into Heat Management mode. No biggie its done it before, just kinda idles a little rough. Except this time.

While sitting at a light my bike starts to go into EITMS, the light turns green and I start to move, but I'm still down town so I get enough momentum to get going forward then pull the clutch in and coast. Back into EITMS and then into STALL. When I fire it back up most of the bystanders are ducking for cover and a few screamed. Rough neighborhood? Bike backfires in a cloud of grey smoke. Luckly I was at the end of the strip so had some time to run it and get the heat back down before the next light. No more problems for the rest of my ride.

Well I have TTS so I am wondering if there are any tuning sollution to keep my bike from stalling? I do have the option to turn if off in TTS, but I would like to keep it for the times I am stuck in crap traffic.

Any Ideas?

I haven't touched the RPM from the base calibration file, when this occured I hadn't done any thing more that adjust my CLB tables, calibrate my VE's, Reduce my PE Mode RPM to 4200 and remove 1 unit (to 12.9) in MAP 20, 2000 RPM and lower. I am not currently of the opinion this was caused by TTS or a TTS setting per say as I have read other posts where this stall has happened to them and they don't have the TTS. Most have attributed it to the way the EITMS system functions under specific conditons.

Idle is currently set at 984.
I don't see away to manipulate the EITMS settings other than enable/disable in TTS. When the heat managment mode kicks it it feels like the target RPM increases then gets a little rough as the rear cylinder kicks out. Wife said it sounded like a hole lot of pinging. If I were to guess I would say the stall occured with an RMP around 1100 or 1200 and a MAP around 20. I just don't know how to compensate for this under EITMS mode and not jack up the settings under the non EITMS mode. I am considering turning it off, my daily commute has me going thru downtown cincinatti daily, this was are first hot day and I would hate to be stalling, popping and backfiring my way thru downtown.

Its a cooker today, I might data log it for a while and see what happens.... I'll post it here later if I get some good data.

I didn't realize the two operated differently, I assumed that TTS didn't alter the operation of EITMS and just allowed the enable/disable. I am using AE176-002-B1 as my base calibration. I was able to recreate it.. kinda, but enough to get an idea of what happened.

When my EITMS kicks in it looks like I get a temp spike in RPM before settleing back down, probably the combo of the spike and alternating cyclinder cut off, which is rough, makes it feel like its idleing lower. But thats not the case as its still hitting my target RPM. I do see when I am ready to move, I begin to engage the clutch and when I feel it catch I add throttle. This stratagy isn't working on one cylinder. The first time I did it I could feel the struggle and adjusted TPS accordingly. RPM came down to 659 before I record any TPS%. The next stop/start was worse, I start at a happy 987 in EITMS but then fall down a hole as I try to get some friction before adding throttle. I can only surmise this was the case last night in my rolling stall. I could also only guess the backfire and cloud of grey smoke was a result of too much fuel from stalling and starting.

In EITMS you can't engage the clutch in the same manner as none EITMS. Its too bad EITMS doesn't reconize Clutch status and use that to kick it out of EITMS, that is probably to simplistic. I think I could easily stall this bike out in EITMS mode, mainly due to the different handling charateristics between my bike from one red light to the next. If I can't sort out some way to adjust it I think I will turn it off.

Oz,

I agree with the CLB tables, higher = cooler, but I currently beleive that to be marginal. However this appears to be my best tuning alternative for heat managment and EITMS management. Trying to prevent it from coming on in the first place. At best the higher CLB values might buy me a few seconds perhaps? If I can find some time tomorrow I may give it a shot and review against today data.

My wife was born on the Island and my home town is Penticton. Great place, the island, but I would think you'd run out of places to go biking to... ferry rides don't count as biking..

For my Decel I am adding fuel in the 20 map at 2000 rpm and less. One value at a time. It was set to 13.0 I have it at 12.9. I have no Tach so its all best guess on RPM's when it happens. When I move back to Canada and have to replace my speedo, I'll get one with a tach as well. Since I added fuel I haven't had the decel pop, but I haven't gone down any good low speed twisty hills yet either.

I haven't started playing with the timing, I need to uderstand more about what it does and how I could measure any improvement before I mess around with those values.

Thanks!

You know, I was so good about opening up my manaul to look for information when I had some kind of problem. Looks like I skipped over section 3.11 EITMS - Engine Idle Temperature Managment System.

Mode 1: AFR enrichment (My peak in RPM) is activated when the engine temp exceeds 142C and Engine RMP is less than 1200 RMP
Mode 2: Skip Fire (My rough ride when I knew it was kicking in) is activated when engine temp exceeds 155C and speed is less than 1-2 klicks
EITMS overides AFR tables.

When in EITMS the only thing you do to have it disable is raise the RPM above 1300 RPM or go over 2-3 kph. Once the system is seeing too much temperature it turns on fuel enrichment to try and help and when that will not stop it from climbing we begin a skip fire mode in both cylinders to allow cool air to pass through the motor to pull some of the heat out. It is possible to stall the bike in this mode if you just slip the clutch out. Give it just a small amount of throttle first then clutch when in this mode. If you switch it off via the tuning software understand it going to get hotter quicker and keep getting hotter at low speeds.

Thanks Steve, I am definately trying to avoid turning it off, really just looking for a way to manage it, perhaps better than I am now. Next time I get into EITMS again I'll give it a blip and see how that works for me.

So is blipping the throttle still the best solution for EITMS stalls. At temps where the EITMS kicks in my 09 dyna big twin has a tendency to stall when coming to a stop with the clutch pulled in, doesn't seem to want to keep the rpm up. Help file says, I think, to disable EITMS and then play with timing, 02 bias, and then setting the idle AF in the AF tables (currently set to 14.6). I'm using the baseline tables, with O2 bias 720 and VTuned. Except for the low speed idle heat thing, bike runs great.