[Diy_efi] Re: new EFI controller

Greg Hermann bearbvd at mindspring.com
Thu Mar 13 14:52:30 GMT 2003


>> But did you scope the power line on a running car ? You can SEE all
>> ignition AND injection events on the line. In the wav file of MAF
>> output I've sent you there are voltage spikes on the MAF output signal.
>> MAF is a complexe circuit with op-amps and Temp/voltage
>> auto-compensations.
>> Don't say it's ignition high voltage:  I have a static 4 coils ignition,
>> the MAF is FAR from the ignition amplifier and wires (which are under a
>> alu cache).

All of which leads one to see the sense in having intelligent MAF
sensor(s!) which connect to the ecu via CAN bus !! Likewise for the MAP
sensor. Including DSP in said sensors might well be productive, also,
particularly if such could be "educated" by the ecu via the CAN bus
connection !!

Greg



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