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The mkiv Supra Owners Club

safc2 help


captainchaos

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right i think i have found out what most of the wires just need 3 more correct me if im wrong please

 

 

WHITE -

YELLOW -

BLUE -

PINK - AIRFUEL TO ECU

ORANGE - AIRFUEL TO SENSOR

GREY - THROTTLE SIGNAL

PURPLE - KNOCK

RED - IG POWER

BLACK - GROUND

BROWN - GROUND

GREEN - RPM

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right i think i have found out what most of the wires just need 3 more correct me if im wrong please

 

 

WHITE -

YELLOW -

BLUE -

PINK - AIRFUEL TO ECU

ORANGE - AIRFUEL TO SENSOR

GREY - THROTTLE SIGNAL

PURPLE - KNOCK

RED - IG POWER

BLACK - GROUND

BROWN - GROUND

GREEN - RPM

 

that set up is for Karman type air flow sensor which is wrong, you want to use hot wire/flap/pressure sensor type which is

red-power supply

green-rpm

purple-knock

gray-throttle

brown-ground

black-ground

yellow-airflow/pressure sensor output

white-airflow/pressure signal input

 

you really need a manual mate if you screw this up you could be in a world of hurt you have to be 100% in what and where you are connecting

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The SAFC will lower the airflow signal and the VFCC will clip it just under 1 bar. If your injectors are big enough you can remove the VFCC and flog it, because you'll trim so much airflow signal (to lower the amount of duty cycle the injectors are running) that you'll never actually send the stock ECU a big enough airflow signal to trip fuel cut.

 

If you are hitting fuel cut your injectors are at 100% duty cycle and therefore aren't big enough or need their duty trimming down.

 

If you leave both in it doesn't matter what order you plumb them in, but they need to be one after the other and not in parallel.

 

-Ian

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