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Got the full boat...

wsholar

wsholar

Cruisin' Guzzisti
Joined
Oct 28, 2008
Messages
187
Location
Redwood Shores, CA
Todd installed the PC V w/AT on Wednesday, and slowly but surely, I'm building a viable map. Only a few spots that are correcting at >20, and not too many between 10 and 20, and each iteration gets a little smoother, a little more responsive.

Thanks, Todd. Looking forward to getting it nailed down over the next week.

PS Todd-- gonna need that rear Scorpion Trail pronto... B)
 
So is your intent to zero out or disable the A/T after you feel you have a viable map ? I personally don't feel the A/T ever will stop correcting the A/F mixture due to temperatures and atmospheric pressure. What I do is when I think of it I will accept the A/T corrections and don't even look at it for several hundred more miles. Todd am I all wet here ? The Norge just runs flawlessly in all types of conditions even at 4000 ft on the Blue Ridge Parkway.

Still thinking about the Cal Vin mods.
 
I'll be doing the same. It's just taking several iterations to get a viable map to go with. When all the trims are within 10 or so, AND the bike is running smoothly across the rpm range, then I'll stop the frequent mapping updates, this per todd's rec.
 
wsholar said:
Todd installed the PC V w/AT on Wednesday, and slowly but surely, I'm building a viable map. Thanks, Todd. Looking forward to getting it nailed down over the next week. PS Todd-- gonna need that rear Scorpion Trail pronto... B)
Click to expand...
My pleasure, and it's on the way. ;)
 
The AT is looking at a wideband lambda sensor to do corrections.
Do not forget that the lambda sensor is aging too and can be drifted off accuracy in non predicatble way because of water contamination or other sh#t. Under normal use it is supposed to be good for 100 000 miles but these are for near perfect fueling conditions on a properly filtered and maintained car, not on a more exposed and less filtered motorcycle environment.
If you leave it always on its own mind you risk wrong corrections if the sensor misbehaves.

Todd, are there limits that can be entered as to how much lean the PC can go whatever the sensor readings?
 
Hey, Todd, I was nosing around the pc v utility, and I noticed that the +\- 20 limitation is a configurable parameter. Does it make sense to widen that range for the first couple of iterations and save some time/trouble in saving trims and uploading maps over and over? I can see narrowing the range as the map gets more solidified, but seems like a wider range might be more efficient at first. It's neither here not there to me right now; my map's close to nailed down. Narrowing the range after establishing a good baseline map would also prevent a "faulty sensor" from screwing up a good map.
 
Michail, +/-100%.

Wallis, if building a map from scratch (all zeros), then yes it could be extended. Max AutoTune correction is 50% per target AFR.
When starting with a base map, it isn't really needed in my experience. As I mentioned, as long as all of the cells are <20, no other manual trim corrections are needed.
 
From my most recent (and best yet) map, it looks like I could have saved myself some trouble by starting out with a range of +/-30. That 2K-4K rpm range I mentioned to you that seemed "a bit rich" got leaned out as much as -27. I've been applying the trims after different types of riding (round town, freeway, canyon road), so the map gets trimmed in different places each time. The map is settling in nicely though. Seems like a funky point is that low TP/3k spot-- there's a fine line between rich (chugging/sputtering) and lean (popping when easing down from higher rpm). I think what I have right now needs to go one point or two leaner, and that might be as good as it gets. I'll show you where I'm at when I'm in for the tire change, Todd, and we can take it from there.

BTW, I took Tess up the 605 and back yesterday...her first ride since the pc/at install...and she said the smoothness and responsiveness were noticeable, so noticeable that she would have said something even if I hadn't asked her about it.
 
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