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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.
Mirrmu, what combination would be the most useful for the most people? Keep in mind that the Target Tune is most likely the "way of the future" and is the most textbook.
The dyno tunes tend to be the easiest to point out tuning irregularities. Target Tune tends to fix all the irregularities.
Andy
Last edited by whittlebeast; Mar 16, 2016 at 11:05 AM.
Lets start on this screen shot. At this point, I am just looking for fuel issues.
Here is the first view I go to. I lock the AFF limits to a min of 95 and a max of 105. I am looking for the big red areas indicating the AFF is adding at least 5% or deep blue areas indicating the ECU is pulling fuel. On the right screen, I am looking for a well defined and relatively straight line.
You use MAP Smoothed, RPM Smoothed, how is that different then our MAP and RPM, and if it is, what did you use to create it?
You said you lock the AFF limits: exactly what is meant by that? If you set up a filter all it would do is block the read-out above and below.
What if, in the right screen, the line isnt straight, but has a curve?
What does it mean and how would one make it straight?
In the log that created the pic below the front cylinder forms a fairly straight line, but the rear has a noticeable curve. Is this within acceptable limits, and if not, how would one correct?
Regarding setting Limits, In the case of trims, when I am hand tuning, I like to sneak up on correcting fueling. Keep in mind that you VE by 8% is about 1 AFR at the tail pipe.
When playing with Limits, you can get the colors to make more sense.
A curve on one cylinder and not matching the other indicates that the exhaust system has issues. In the Harley world you have to make the best you can with what you have.
It is part of dealing with a shared exhaust, wobble fire motor.
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