Sorry if this is a silly question.
Background: attempting to use a VLT AFM for a little flow bench for a gas mixer project and anyways thought i would get the MAF translation map off nistune so i could work out rough actual % flow change.
So looking at the map it goes up to 6620mV = 100%
5020mV = 38.6%
I thought the MAF's maxed out at 5000mV?
More than likely i am missing something obvious but if you could please enlighten me.
Cheers
VLT MAF Translation Map 100%=6620mV
Moderator: Matt
Later model Nissan AFMs do use the 0-5 volt range but the early model JECS ECUs (VLT, Z31, R31 1984 - 1989) and Hitachi (HR31 1986-1988) use a different AFM voltage range about 1500 - 6500 volts
There is an AFM_OFFSET in the address file which bumps up the raw voltage to that on the AFM input line on the guages
If using a later model AFM on a VLT for example then you would need to bypass the circuit which drops the voltage and put a zener diode on there to clamp the maximum to 5.1 volts
There is an AFM_OFFSET in the address file which bumps up the raw voltage to that on the AFM input line on the guages
If using a later model AFM on a VLT for example then you would need to bypass the circuit which drops the voltage and put a zener diode on there to clamp the maximum to 5.1 volts