I just wondering how the Airflow /HZ Baro and Air temp compensation table working ?

How to get the numbers in the table x axis the Iat comp/ baro factor, 0.53125 0.78125 1.03125 1.28125 ?

and what does the numbers in the table mean ? with that the ecu multiplying the maf readings ?

MAF comp vs coolant temp the table is richen up the fuel mix at cold engine temp ?
If I rescaling the coolant temp, and add in the last row 190 fahrenheit with 1.1 factor than I can cool my engine by fuel if coolant temp get higher ( like radiator cap problem, cooler problem, headgasket, knock ?! ) And the sametime with that could lowering timing in the ignition trim vs engine temp table add to 190 fahrenheit and -2 degree ?

 

bump for the topic

 

Hmmm. Gergo, after reading this I am going to have to think on it. You can use the ignition trim as I understand it that way. I am trying to think of a practical reason other than overheating though that would justify it. Like we were talking about trim vs the air temp I can see that one being more practical since high IAT is more damaging and knock inducing than higher coolant temp.

 

Hi John, thanks to post here. Yes the trim vs air temp is more important but from my experience the stock setting is not so bad.

The life is tricky instead of the overheating i have to play with trim vs coolant temp table one of an Evo 8 because the ralliart cap cause low coolant temp and the car was runing rich

My first idea based on here in summer 105 fahrenheit and on trackday most of the stock cooling system Evos coolant temp get higher after some round and the drivers often doesnt look on the gauge.