TunerPro RT nissan map values Basic info needed to tune
So i have been doing a healthy amount of research and always seem to be linked back to this forum which always has GREAT info on it. With that said i do still have a few questions that i'm sure some of you may be able to answer with e's
Using tunerpro RT and nissan ECU's:
What do the values in the fuel map represent? I understand they represent multipliers but there are 2 very different # ranges.
This is what i've found so far (on this forum i may add )however some one very reputable has told me this may not be 100% correct.
"Fuel Map values
If the MAP VALUE is less than 128, then MULTIPLIER = (DATA + 128)/128
If the MAP VALUE is greater than 128, then MULTIPLIER = (DATA – 64)/128"
"Values above 192 are closed loop. example 192= correction factor of 1 (non)
Values below 192 are open loop. example 0= correction factor of 1 (non)"
Does any know the algorithm the ecu then uses that incorporates these multipliers?
What do the values in the ignition map represent?
Most the #s look like standard timing #s however similar to the fuel map there are some very large #s that look out of place. (perhaps similar to the fuel map these high #s signal the ecu to run in closed loop for ignition aka using the knock sensor for feedback/adjustment?)
Thank you very much for reading and thanks in advance for any help or insight.
Using tunerpro RT and nissan ECU's:
What do the values in the fuel map represent? I understand they represent multipliers but there are 2 very different # ranges.
This is what i've found so far (on this forum i may add )however some one very reputable has told me this may not be 100% correct.
"Fuel Map values
If the MAP VALUE is less than 128, then MULTIPLIER = (DATA + 128)/128
If the MAP VALUE is greater than 128, then MULTIPLIER = (DATA – 64)/128"
"Values above 192 are closed loop. example 192= correction factor of 1 (non)
Values below 192 are open loop. example 0= correction factor of 1 (non)"
Does any know the algorithm the ecu then uses that incorporates these multipliers?
What do the values in the ignition map represent?
Most the #s look like standard timing #s however similar to the fuel map there are some very large #s that look out of place. (perhaps similar to the fuel map these high #s signal the ecu to run in closed loop for ignition aka using the knock sensor for feedback/adjustment?)
Thank you very much for reading and thanks in advance for any help or insight.