3 bar MAP calibration parameter
06-23-2017, 01:04 PM
#1
Staging Lane
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3 bar MAP calibration parameter Preping my car for forced induction and am trying to get the kinks worked out the 3 bar map while its still running N/A.
An idle log from before and after map sensor change shows the new map reading 1 PSI higher than the factory MAP. (im not in boost scanner is just logging as PSI) Was idling about 5 and is now at 6.
Do I mess with the offset number or the linear number to try and get "calibrated".
What does each parameter do?
Its an EFI source 3 bar map and ive read that they want 305 kPa linear and 10.33 offset but it needs a little adjustment from those numbers.
An idle log from before and after map sensor change shows the new map reading 1 PSI higher than the factory MAP. (im not in boost scanner is just logging as PSI) Was idling about 5 and is now at 6.
Do I mess with the offset number or the linear number to try and get "calibrated".
What does each parameter do?
Its an EFI source 3 bar map and ive read that they want 305 kPa linear and 10.33 offset but it needs a little adjustment from those numbers.
06-23-2017, 01:20 PM
#2
the linear value is the "range" of the sensor (or more accurately the slope of the function) and the offset value tells the computer where to put two set points of the slope of the function (it basically shifts it up or down)
how do i do mine?
I set it so it reads 101kPa at key on engine off and scale the rest of the tune around it
how do i do mine?
I set it so it reads 101kPa at key on engine off and scale the rest of the tune around it