ok, i have worked out the rest of the pins on the afm, tho i need to know what does pin 7 do to the meter ect..

the only infomation i can find is:

19 19 Volume air flow sensor Engine: idle speed 0-1V, 3000 rpm 6-9V

Are you talkin bout the air flow sensor Chris?

According to the book it should only have 6 pins.

Are you talkin bout the air flow sensor Chris?

According to the book it should only have 6 pins.


2nd Gens and 3.5lt 3rd Gen AFM's have 7 pins, he's trying to put one on his car, it works sort of.

2nd Gens and 3.5lt 3rd Gen AFM's have 7 pins, he's trying to put one on his car, it works sort of.

Ooopsy my bad:redface: , I'll look again:D

Hmmm......I see why yur having probs Chris, all I can get is that it goes to pin 19 on the ECU.
Lah dee ****ing dah.

Theres a pretty useless diagram in the factory manual and the 1 in haynes is even worse.

Sorry mate.:confused:

if you get this working im watching to see how it go's :) oh and btw pin B19 on 1st gen ecu is a speed sensor so it wont go there :)

if you get this working im watching to see how it go's :) oh and btw pin B19 on 1st gen ecu is a speed sensor so it wont go there :)


I was talking about the 2nd gen puter, but thats a fair comment anyway if hes still usin the first gen one.:D

I wanna see how it goes 2, more pics Chris..:D

Interested to see how this works out :)

Interested to see how this works out :)


It didnt

It didnt
and so it shouldnt cos what difference is it going to make in the first place... all it does is read how much air flows in :nuts:

and so it shouldnt cos what difference is it going to make in the first place... all it does is read how much air flows in :nuts:


It's just the fact of that 7th wire that changes in voltage at different rpm's, could use a resisters that change by using an idle sensor thing but not worth the effort. The reason was just to make a CAI easier eg/Pod placed somewhere and not having that big canistor messing with everything that u want to do. But we got another idea now, just as good

From the TH Service Manual, Pin 19 ECU is the volume airflow sensor reset signal......Whatever that means. :D

Same for Auto and Manual ECU

From the TH Service Manual, Pin 19 ECU is the volume airflow sensor reset signal......Whatever that means. :D

Same for Auto and Manual ECU


Yeah and the voltage changes after 2500 or 3000rpm or something, it was ****ing with things cause it must be linked to the barometric pressure sensor to cause it wasnt advancing the timing with engine revs, it ran better with no AFM at all!

and so it shouldnt cos what difference is it going to make in the first place... all it does is read how much air flows in :nuts:

EXACTLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

a AFM is a AFM... what difference is a second or 3rd gen one gonna do?

the ecu is putting the same amount if fuel vs air that goes in to keep the ratio. putting another AFM is gonna do nothing. first gen is a karmen vortex AFM which is the least restrictive AFM compared to other AFMs.

further more, you'll find that your car will run without the afm connected and can still achieve close to the AFR, cos the reading from the oxy sensor allows the ecu to conpensate.

if you think your AFM is restrictive, does vacuum in your plenum not hit zero under WOT? if it does hit 0, then your intake is fine and can supply the CFM that your motor needs under WOT.

Mitsubishi have spent lots of money on research and development to wake sure the stock intake (AFM, Throttle size, etc except for the ****ty filter) is fine and well exceeds the requirements of a stock motor.

And roller rockers dont count as a non-stock motor, cos they probably have the same duration and lift as a gen1 cam, just using a cam ground for rollers.

What about using a MAP sensor and an after market ECU ?

What about using a MAP sensor and an after market ECU ?

Exactly! someone who knows their ****!

pull a MAP off a commodore, use aftermarket ECU and you'll be laughing. The aftermarket ecu alone will give better results.

Your missing the point though, it wasnt to gain anypower at all. It was just for ease of a CAI system.

Your missing the point though, it wasnt to gain anypower at all. It was just for ease of a CAI system.

a MAP sensor will eliminate the AFM completely, thus making it easier for any CAI or intake you wanna do.... two birds, one stone...

if i had EFI, i'd be making a circuit that takes in the reading of the MAP and converts it a pulse like output that the karmen vortex gives. all you'll need is some known valves of pulse width vs Air flow (oscilloscope is your friend), and some other info about the MAP sensor, program a ATMEL or PIC microcontroller. that'll be the easiest way of eliminating the AFM for a MAP.