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SAFC Initialisation Questions

400HP

By 400HP,
in Engines & Forced Induction

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400HP Experienced

400HP

Posted
Posted

When initialisiting the SAFC and you go into the

etc -> Sensor Type -> Hotwire

Do you set both the "In" and "Out" sensors to the sensor number or just the "In". I set just the "In" and it was idling rough... Also in the "Car Select" when you choose 6 cylinders which day does the arrow point? Diagonal upright or downright?

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rs73 Grand Master

rs73

Posted
Posted

400HP, by referring to the SAFC setup chart, if In/Out sensor numbers are different, the manual will give two numbers i.e. 2/4.

If only one number is given, in case of R33, set both In/Out the same numbers.

Good to hear that now ur SAFC is working fine :-)

400HP Experienced

400HP

Posted
  • Author
Posted
Good to hear that now ur SAFC is working fine :-)

Yeh I'm very happy about it. Just need to get it tuned a bit now.

If only one number is given, in case of R33, set both In/Out the same numbers.

On the manual it says the GTR is a HW-3 so I'm assuming that its just Hotwire with sensor number 3? But I guess this must be it cos when i set it any other way it almost stalls at idle.

rs73 Grand Master

rs73

Posted
Posted

Yeap, 3 is the sensor number which must be set into In & Out settings.

Unless you are doing a GT-R single airflow meter conversion, then In & Out would be different values. That's what I read in SAFC manual and they give an example on a GT-R n 300ZX I think...

jethead98 Enthusiast

jethead98

Posted
Posted

Can i install a 2nd hand SAFC and safely run the car before having it tuned.....Does the SAFC have a default mode of operation where it makes no change to the airflow signal or does it remember the previous owners setting??

Where do most people put the unit, i have a r33, thinking about modifying the small holder benieth the climate control.

Any advice greatly appreciated

400HP Experienced

400HP

Posted
  • Author
Posted

Yes thats exactly what I've done. All you need to do is "Initialise" the SAFC. Theres a setting for this. You then make sure it knows the car type, the number of inputs and outputs and just leave the correction at 0.

This means it wil read in Aiflow and feed it back to ECU as is without correction. Just make sure you initialise it.

jethead98 Enthusiast

jethead98

Posted
Posted

Hey Guys, my installation drawing shows 6 wires,

red = power

Green = Rpm

Brown = Ground 1

Black = Ground 2

Yellow = Airflow out

White = Airflow In

On the Ecu drawing for the R33 it list a throttle signal.

Question

Is the Throttle signal needed, if so, which color wire is attached to it.....

Help needed asap as l am in the middle of the install..

Thankyou

400HP Experienced

400HP

Posted
  • Author
Posted

I don't understand your problem. If you've managed to do all the other wires its exactly the same. Follow the ECU diagram and intercept the throttle with your SAFC wire.

I'm not sure if it will run without it. I assume if you've already wired the airflow in and out that the SAFC is expecting the throttle reading too.

400HP Experienced

400HP

Posted
  • Author
Posted

my install guide didn't tell me ANY of the colours of the ECU wires.... it only had colours of the SAFC wires. From each ECU pin there should only be ONE wire.

So all you do is locate the pin.... see which wire is coming out the back of it.... and tap into that with the SAFC wire.

  • 2 months later...
  • 8 months later...
walkoau Mentor

walkoau

Posted
Posted

guys, help please.

im installing my new s-afc today. only problem is where the wiring diagram(ecu pinout) shows my rpm signal wire on the ecu, there is no wire in this spot??????????

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