Anyone done this?

I've been using a Doolz setup with 1 MAF and a dummy for ages but wanting to get my SAFC put to proper use and wire in a second MAF.

 

My manual for the SAFC is in Japanese and I don't know the pins on the MAF either...

I've done it, fairly easy to do. I'm at work at the moment but I found a wiring diagram on tt.net. If you don't find it PM me and I'll have a look at home.

 

You need some shielded wire for the signal ( i got some from maplin) and you need to run it from the ECU to the MAF, rest of the wires you can piggy back off the original harness.

 

Guess you have an ecu for dual pop so you'll need to set the AFC to averaging and off you go!

Thanks matey,

 

My current chip is set to halve the air value so I presume I need to reset this value to standard for the SAFC to do it's thing?

If you set it to average the readings K value for dual pop will be fine.

Can't find anything of much use on twinturbo.net - they're not very helpful as most posts asking for info just seem to get flamed with useful "read the manual, a55hole!" type answers LOL

 

Well I got the S-AFC manual and the AFM wiring from the service manual and it looks like there's just a single wire needs running from the new AFM to the second input on the AFC? the others just connect to the original AFM harness for power etc?

 

In the S-AFC manual it shows settings for 2 twin AFM setups.

One for a Skyline and the other for 300ZX with twins.

On the Skyline it says to set the output to "Averaged" but on the Z it says to set to "Add" the inputs??

 

I've been messing with the "dummy" faulty AFM that Z1 Motorsports sent with the Doolz setup and think I might have repaired it to save some cash :) Will test it today.

Just need the harness connector now - did you have any luck J.D?

 

Cheers,

 

Chris.

As JD says you'll want to use averaging. I have mine on ADD as I have a non dual pop ECU.

Completey forgot to look, sorry. Was having a nightmare day with my car!

Will do it tomorrow. Pretty sure it's there though.

OK I had a proper look at the connector today and there's 5 pins in use:

 

A: Orange - Pin 37 on ECU

B: White - Pin 27 on ECU

C: Black - Ground

D: Black - Ground - Pin 26 on ECU?

E: White - 12v from ECCS relay

 

Still can't quite see which I need to run to the ECU and/or the S-AFC as the online Nissan wiring diagram is very fuzzy and doesn't describe the functions very clearly.

Anyone got a pic of the ECU connector with all the main function pins labelled?

 

Thought I'd repaired my dummy AFM but took it for a drive today using it and it runs crap so guess I still need a new one.

http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=939385

Thanks Lymon :D :nana2:

I searched for ages the other night and couldn't find that!

So am i right in thinking that the MAF sig ground runs to the ECU pin 26?? so do you basically run both MAF sig grounds to this pic?

 

I'm not doing the SAFC route i'm going for the apexi pf from a skyline and the only difference is it has a feed for both MAFs but from what i can make out only one sig ground?

 

Mike

So am i right in thinking that the MAF sig ground runs to the ECU pin 26?? so do you basically run both MAF sig grounds to this pic?

 

I'm not doing the SAFC route i'm going for the apexi pf from a skyline and the only difference is it has a feed for both MAFs but from what i can make out only one sig ground?

 

Mike

 

Yes :)

Will do that then :)

 

Fingers crossed should be going in, in 2 weeks for mapping then ;)

 

Mike

Couldn't find the connector, sorry. Sure it's buried in there somewhere! SPL parts sell them new cheap.