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Hi everyone, I have a question. I hope you guys can help me please.
If I´m Tuning a car with MAF as load input and modify these compensation tables based on the 3% table, This 3% will be added to the actual percentage MAF calculated? If the ecu added 2,5% because the air temperature went 8°C down, the compensation table added 3% more resulting in 5,5% increment? Maybe causing a little rich mixture? How is it notable when my car doesnt has AFR Gauge?
How you guys deal with this? Greetings.
MAF stands for Mass Air Flow, and the air mass will change with temperature, so it's is already compensated by the MAF sensor. Any additional air temp compensation you might choose to add would be for reasons like attempting to run a richer mixture to avoid knock with high air temps.
Hi David, thank you for the input, so with a car with MAF at high I.A.T at 40ºC for example, we can add 6% more of fuel right? With Map and TPS as load input we should follow the 3% recommendation every 10% changes in I.A.T right?
Luis,
The mass airflow sensor measures air mass, so you don't have to compensate the reading based on temperature.
Temperature compensation of air mass based on air temperature is necessary in a speed density model (without a MAF sensor) because you need to know temperature and pressure to determine air density.
Thank u guys
