Tuning around voltage offset?
05-21-2009, 02:05 AM
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Tuning around voltage offset? I have a PLX gauge and the readings seem accurate/reasonable. But I was thinking, I was depending on it without really verifying that my pcm reads correctly. It is too hard to compare against my gauge as hptuners samples faster.
I grounded my analog output through my pcm and installed the noise filter (capacitor) and am going through the egr input.
I set up a PID to convert the voltage to a/f and have a car that runs great. But I am wondering how i can verify what hptuners actually sees is correct.
I assume there is some way to compare against the narrowbands, but I dont know the best way to do this. Compare against stfts at 14.7?
I realize widebands and narrowbands work completely differently as well
I assume once
I grounded my analog output through my pcm and installed the noise filter (capacitor) and am going through the egr input.
I set up a PID to convert the voltage to a/f and have a car that runs great. But I am wondering how i can verify what hptuners actually sees is correct.
I assume there is some way to compare against the narrowbands, but I dont know the best way to do this. Compare against stfts at 14.7?
I realize widebands and narrowbands work completely differently as well
I assume once
05-21-2009, 11:04 AM
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STFT+LTFT on the narrowbands just tells you
that the PCM has made the time average match
the target (mV vs Airflow Mode). How that target
relates to true mixture, is unclear when it comes
down to cases.
Tuning to numbers gets you in the ballpark but
let the other measures of {performance, smell,
MAP readings at idle and cruise}, tell you when
you're done.
that the PCM has made the time average match
the target (mV vs Airflow Mode). How that target
relates to true mixture, is unclear when it comes
down to cases.
Tuning to numbers gets you in the ballpark but
let the other measures of {performance, smell,
MAP readings at idle and cruise}, tell you when
you're done.
