cribbj wrote:
For my engine build, I plan to use 12 ITB's with individual filters and no common air boxes, hence no MAF sensors.
For load sensing I will only have MAP and TPS, however I wish to be able to synthesize a MAF signal for the OEM ECU's, which will still be "somewhat" in the system, but not actually running the engine. However, I want to try and keep them happy and not throwing MIL's or CEL's
Would anyone have ideas how to synthesize a MAF signal? I understand the MS III does this?
The first step is calculate the MAF, which the model I have does, but it will probably need one more line of code to make it 6 cylinders of MAF.
Then we just need to know how the sensor you have works? If it's a frequency based thing then we can send the calculated MAF to and PWM output with an appropriate pull-up voltage (this is probably the type an MS3 could support). If it's a 0-5V signal its tougher because you need an analog output which the ecu doesn't have....a high frequency PWM with a filter maybe?