Power Vision Information Thread
Road Captain
Joined: Jun 2006
Posts: 580
Likes: 0
From: Colorado
So I got a note from Jamie at FM a week or so back and he said we needed to address my map after the Dynojet rep made some changes via remote PC link. I don't know what needed to be address and I have not heard back from him yet either.
I did some data logs and I still have some knock events, but I don't hear any pinging. Most of the knock events are 2* or less on the front cylinder only in the 60 kpa column from 1750 to 2750 rpm. I had one 7* pull, but it was getting pretty warm in stop and go when that happened so I think that was just an anomaly.
Question is, what is considered a minor knock event and what is considered a major knock event? What should I ignore and what should I worry about trying to fix? I have done auto tunes and I have done Log Tuner tunes. Both say my VE's are no more that 2-3 off so the VE's are dialed in and when using Log Tuner it doesn't ever want to pull more that point 2 or point 3 degrees of timing in a few places.
I have created several new tunes using the Lot Tuner allowing it to pull those small amounts of timing, but I still keep getting the knock events in the same places. I even allowed it to readjust the VE tables in the last two Log Tuner maps, but no real change in knock events and again the VE table changes were less than the 5%.
I did some data logs and I still have some knock events, but I don't hear any pinging. Most of the knock events are 2* or less on the front cylinder only in the 60 kpa column from 1750 to 2750 rpm. I had one 7* pull, but it was getting pretty warm in stop and go when that happened so I think that was just an anomaly.
Question is, what is considered a minor knock event and what is considered a major knock event? What should I ignore and what should I worry about trying to fix? I have done auto tunes and I have done Log Tuner tunes. Both say my VE's are no more that 2-3 off so the VE's are dialed in and when using Log Tuner it doesn't ever want to pull more that point 2 or point 3 degrees of timing in a few places.
I have created several new tunes using the Lot Tuner allowing it to pull those small amounts of timing, but I still keep getting the knock events in the same places. I even allowed it to readjust the VE tables in the last two Log Tuner maps, but no real change in knock events and again the VE table changes were less than the 5%.
Last edited by ColoSpgsMark; Apr 4, 2013 at 08:09 AM.
Tourer
Joined: Oct 2011
Posts: 290
Likes: 1
From: Ventura, CA
If you still can't see it after selecting Pro Mode, leave the tune open in WinPV, Go to the upper menu bar, PowerVision/Update Tune using PV. You will have to have the PV connected to your PC. This adds all the new tables to the tune you are using. Keep track of what you are updating.
Road Captain
Joined: Aug 2008
Posts: 716
Likes: 10
From: Shreveport,La
Thanks everyone. I got a new map from Jamie at FM yesterday. He said to run this one and do some logs to see how it was running and what the timing was doing. He also said we would address the timing till we got it right and then work on mpg later if it wasn't doing better by then.
Jim, the knock events are mostly during cruise. No load running near a constant speed with rpm 2000 - 2500 and the KPA in the 60's. It is kind of hard to tell, but I am thinking it is happening when I start down a slight hill where I drop TP a couple. I don't really see much when I am doing hard roll ons.
The weather is supposed to be better Friday and Saturday so I hope to get some riding in to see how the new map works. Like I said before, the bike seems to run great and I don't hear any pinging so the ECM is catching it before it starts or it is a false knock event. They only last about 5-8 milliseconds' and usually no more than 2* pulled when they show up although I have had the occasional 4*, but those are rare.
Jim, the knock events are mostly during cruise. No load running near a constant speed with rpm 2000 - 2500 and the KPA in the 60's. It is kind of hard to tell, but I am thinking it is happening when I start down a slight hill where I drop TP a couple. I don't really see much when I am doing hard roll ons.
The weather is supposed to be better Friday and Saturday so I hope to get some riding in to see how the new map works. Like I said before, the bike seems to run great and I don't hear any pinging so the ECM is catching it before it starts or it is a false knock event. They only last about 5-8 milliseconds' and usually no more than 2* pulled when they show up although I have had the occasional 4*, but those are rare.
Advanced
Joined: Dec 2012
Posts: 82
Likes: 0
From: Arkansas
My 2012 dyna switchback hates 2000 rpm's . lugs very badly there . Stay in 5th gear and keep rpms around 2500 to 3000 for cruising . I only run 6th gear if i am able to be at or above 2300 rpm's .usually on interstate. 2000 rpms in 6th gear feels like it is beating the bearings out of the lower end This is jmo.
Road Captain
Joined: Jun 2006
Posts: 580
Likes: 0
From: Colorado
My 2012 dyna switchback hates 2000 rpm's . lugs very badly there . Stay in 5th gear and keep rpms around 2500 to 3000 for cruising . I only run 6th gear if i am able to be at or above 2300 rpm's .usually on interstate. 2000 rpms in 6th gear feels like it is beating the bearings out of the lower end This is jmo.
Road Captain
Joined: Nov 2012
Posts: 569
Likes: 0
From: USA
Thanks everyone. I got a new map from Jamie at FM yesterday. He said to run this one and do some logs to see how it was running and what the timing was doing. He also said we would address the timing till we got it right and then work on mpg later if it wasn't doing better by then.
Jim, the knock events are mostly during cruise. No load running near a constant speed with rpm 2000 - 2500 and the KPA in the 60's. It is kind of hard to tell, but I am thinking it is happening when I start down a slight hill where I drop TP a couple. I don't really see much when I am doing hard roll ons.
The weather is supposed to be better Friday and Saturday so I hope to get some riding in to see how the new map works. Like I said before, the bike seems to run great and I don't hear any pinging so the ECM is catching it before it starts or it is a false knock event. They only last about 5-8 milliseconds' and usually no more than 2* pulled when they show up although I have had the occasional 4*, but those are rare.
Jim, the knock events are mostly during cruise. No load running near a constant speed with rpm 2000 - 2500 and the KPA in the 60's. It is kind of hard to tell, but I am thinking it is happening when I start down a slight hill where I drop TP a couple. I don't really see much when I am doing hard roll ons.
The weather is supposed to be better Friday and Saturday so I hope to get some riding in to see how the new map works. Like I said before, the bike seems to run great and I don't hear any pinging so the ECM is catching it before it starts or it is a false knock event. They only last about 5-8 milliseconds' and usually no more than 2* pulled when they show up although I have had the occasional 4*, but those are rare.
Road Captain
Joined: Oct 2011
Posts: 523
Likes: 1
From: kingston ontario
thanks for the help.
i am looking at knock and timing but was confused by the mix of positive and negative numbers, i think looking at pvv logs was part of the problem as i find the csv logs a little more informative and better laid out (i'm learning)
what is the difference between a pvv log and a csv log, and why do we have both?
now that i am looking at a csv log i see no knock event till near the end of the file.
the first event starts off at about 4 then goes to 4.5 moves down to .5 for the rest of the file but never returns to 0 all in the front cylinder.
the first 3/4 of the log has no events
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Road Master
Joined: May 2010
Posts: 980
Likes: 352
From: Wisconsin
Not sure what the difference is with the pvv logs.