VERY interesting PC-V map test! Long, but worth it.
#41
I'm finding -4 took away 98% of the pinging on my 09 ultra with 103"
Very curious about making them +3 to see what happens but not if your engine is a 96" is their anyway you can send me your ignition table so I can actually see it. (if it is a 103") Please send to usmmdad@cfl.rr.com I would really appreciate it.
Last edited by iclick; 11-01-2010 at 11:30 PM.
#42
The ecm has been reflashed ????? I know it has been updated if thats what you mean. I'm getting a single ping at WOT in 6th gear if I hit it fast 3000rpm at approx 70mpg more or less .
I have all -4 in the cruise range from 1750 @ 5% throttle to 80 down to
3500 @ 5% throttle to 80
I think I'm almost there but because the engine is running much smoother and the pipes sound even better !! High high can I go in the - Can I go 5 or 6
I have all -4 in the cruise range from 1750 @ 5% throttle to 80 down to
3500 @ 5% throttle to 80
I think I'm almost there but because the engine is running much smoother and the pipes sound even better !! High high can I go in the - Can I go 5 or 6
#43
I am curious. I tried just -2 in the 2750-3250 range because I get what I think is pinging with slight roll on in that range. Jamie sent another map, and it helped up till about 3K, but was still doing it just above that. When I did it, my bike started to miss in that range. But yours is running OK from what you say. Mine is an 11, so my timing curve may be less advanced then your build. I didn't think -2 degrees would have that much of an effect? Is it possible that it is in fact ping and the ECM is pulling timing and on top of the reduced timing I am forcing with the PCV, and hence the miss?
#44
#45
Thought I'd just make a comment about the knock retard. I've been tuning using the TTS and had been having problems with fast knock retard. Long story but finally thought I had it all sorted out and did a 25-30 minute data run. In that time it pulled 8 degrees of timing from the front for 1/2 - 3/4 of the run primarily in 5th & 6th gear when increasing speed. I changed maps and even went back to stock map and had the same results. The Wizard on this forum was helping me and even though I was about to give up he convinced me to continue.
Prior to this I always heard the slight marbly sound when rolling on the throttle. On the last runs I heard nothing except when I changed to the older & stock maps. Only difference was I had installed new NGK plugs.
I removed the NGK plugs and replaced with the old HD 6R12 plugs (cleaned/sharpened/gapped), flashed the latest map in the ECM did the same run and no spark retard.
Guess my point is that in my experience on my bike, the fast knock retard seems to be very sensitive. It needs to see the right plug impedance/resistance to perform properly. If you guys are having spark removed and are using non-HD plugs you might want to give this a try. It's a cheap experiment if you are having issues.
Prior to this I always heard the slight marbly sound when rolling on the throttle. On the last runs I heard nothing except when I changed to the older & stock maps. Only difference was I had installed new NGK plugs.
I removed the NGK plugs and replaced with the old HD 6R12 plugs (cleaned/sharpened/gapped), flashed the latest map in the ECM did the same run and no spark retard.
Guess my point is that in my experience on my bike, the fast knock retard seems to be very sensitive. It needs to see the right plug impedance/resistance to perform properly. If you guys are having spark removed and are using non-HD plugs you might want to give this a try. It's a cheap experiment if you are having issues.
#46
I'm getting a single ping at WOT in 6th gear if I hit it fast 3000rpm at approx 70mpg more or less. I have all -4 in the cruise range from 1750 @ 5% throttle to 80 down to 3500 @ 5% throttle to 80. I think I'm almost there but because the engine is running much smoother and the pipes sound even better !! High high can I go in the - Can I go 5 or 6
Since you described your knock as occurring when you "nail it," I've retarded a bit more at WOT (100% TP) @ 3K RPM. You can fine-tune this by listening for detonation and subtracting 2-3° when you hear it. Some will say this method is imprecise, but I think you can get very close tuning by ear this way, although it may take a bit of trial-and-error to zero in on it.
#47
Thought I'd just make a comment about the knock retard. I've been tuning using the TTS and had been having problems with fast knock retard. Long story but finally thought I had it all sorted out and did a 25-30 minute data run. In that time it pulled 8 degrees of timing from the front for 1/2 - 3/4 of the run primarily in 5th & 6th gear when increasing speed. I changed maps and even went back to stock map and had the same results. The Wizard on this forum was helping me and even though I was about to give up he convinced me to continue.
Prior to this I always heard the slight marbly sound when rolling on the throttle. On the last runs I heard nothing except when I changed to the older & stock maps. Only difference was I had installed new NGK plugs.
I removed the NGK plugs and replaced with the old HD 6R12 plugs (cleaned/sharpened/gapped), flashed the latest map in the ECM did the same run and no spark retard.
Guess my point is that in my experience on my bike, the fast knock retard seems to be very sensitive. It needs to see the right plug impedance/resistance to perform properly. If you guys are having spark removed and are using non-HD plugs you might want to give this a try. It's a cheap experiment if you are having issues.
Prior to this I always heard the slight marbly sound when rolling on the throttle. On the last runs I heard nothing except when I changed to the older & stock maps. Only difference was I had installed new NGK plugs.
I removed the NGK plugs and replaced with the old HD 6R12 plugs (cleaned/sharpened/gapped), flashed the latest map in the ECM did the same run and no spark retard.
Guess my point is that in my experience on my bike, the fast knock retard seems to be very sensitive. It needs to see the right plug impedance/resistance to perform properly. If you guys are having spark removed and are using non-HD plugs you might want to give this a try. It's a cheap experiment if you are having issues.
Before reading your post I hadn't thought about plugs as being a variable with detonation issues, but I'm now more aware of this as a possible factor. To those who are having problems with detonation, it might be worth your while to install some HD plugs and see if that helps. Some old ones from the parts drawer would be good for testing after cleaning and gapping.
I think the knock-retard function is going to vary from year to year, so what works for one may not for another. I hope anyone who tries the spark-plug swap will report back any changes they see (or rather hear) in so doing.
#48
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