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Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
...I did find some other info relating to using AT PRO to tune spark, so I'm assuming AT-TT should work the same. But I'm definitely missing something because it's not trimming.
Dog- I don't think you'll find TT trimming the spark tables (I could be wrong on this, but I've not found it).
That's one very good reason why Mega Log Viewer (MLV) is so great.
Like you, and others, I have the tune well dialed in with TT, but there are just a couple of spark cells, really nothing to worry about (but we always want better/best) and the MLV along with Andy's (Whittlebeast) posts on the forum has really helped me narrow down specific cells without having to guess/test.
I'm headed out for some good logging runs today--good luck Dog.
And I can't say enough about MLV and what little I know about the myriad of things it can do.
Is there a way to monitor how far out of whack a tune is? I used to keep an eye on the CLI's on my Softail. Now I'm working on tuning a 2012 Touring bike. I looked for the CLI's on the monitor and don't see them. Do CLI's or AFF's not come into the picture on a lambda cal (strategy 9)?
Dog- I don't think you'll find TT trimming the spark tables (I could be wrong on this, but I've not found it).
That's one very good reason why Mega Log Viewer (MLV) is so great.
Like you, and others, I have the tune well dialed in with TT, but there are just a couple of spark cells, really nothing to worry about (but we always want better/best) and the MLV along with Andy's (Whittlebeast) posts on the forum has really helped me narrow down specific cells without having to guess/test.
I'm headed out for some good logging runs today--good luck Dog.
And I can't say enough about MLV and what little I know about the myriad of things it can do.
Yeh thanks JetD- This is more of an experiment with TT's capabilities. I was led to believe that it will "learn" spark during a TT AT session and trim as appropriate if knock is detected in certain cells. it says specifically on the AT settings screen "enable spark tuning" with min and max learn thresholds.
I have been using MLV as well as plain ol log data to review and change spark as needed- was hoping TT's AT would be a better more automated tool in that manner. I like to kick the tires of any new product to see what it can and cant do
Whe looking at log files in excel if a neg value in the spark tables shows up does that indicate that cell should be retarded to that amount?
No not exactly, That value was just recorded at that moment, If it was also accompanied by a Knock Retard event or shortly after one, Thats what the ECM is adjusting the cell to for a short time, It decays back to the set value over a few cycles. There may also be other factors from other setings adjusting values. I had wondered why I was seeing 0's when I had none in my spark tables. There is also the closed throttle spark table, Which I enabled and set a little lower than the 25 degrees that was already pre set there but not enabled. If Knock events aren't huge or reappearing at the same Kpa/RPM consistantly I was advised to let the ECM do its job. If you want to adjust timing yourself in those cells just pull a small percentage of the amount shown and look at the cells just before and diagonally of the knock event that was recorded.(things happen so fast theres a little lag time) And possibly add a little fuel there, I don't explain things very well, So I try to stick to the basics but there's a lot of good info in this thread.
I'll add your more likely to see negative spark values in your log in the upper right corner of the table where MAP is high and RPM's low (lugging) the ECM can/will pull up to 8 degrees (pre set value) and put you into negative values. So keep your RPM's up and ride on
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