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Power FC VG30 AFM... Help required

Targa Tom

By Targa Tom,
in Engines & Forced Induction

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Targa Tom Proficient

Targa Tom

Posted
Posted

Having a spot of trouble getting my head round the AFM thing. RB20DET PFC like all has 5 AFM options. Yet when you check next to the appropriate one nothing changes?

What does the figure next to the AFM volt setting indicate?

Gee that will help...

TT

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Chris32 Veteran

Chris32

Posted
Posted
Having a spot of trouble getting my head round the AFM thing. RB20DET PFC like all has 5 AFM options. Yet when you check next to the appropriate one nothing changes?

What does the figure next to the AFM volt setting indicate?

Gee that will help...

TT

Will have a look at mine at lunch, you have it set to VG30 80mm I take it

Chris

Sydneykid Grand Master

Sydneykid

Posted
Posted
Having a spot of trouble getting my head round the AFM thing. RB20DET PFC like all has 5 AFM options. Yet when you check next to the appropriate one nothing changes?

What does the figure next to the AFM volt setting indicate?

Gee that will help...

TT

Hi TT, my understanding is that those numbers refer to the 5th Option in which you plug in your own polynomial:cheers:

Sydneykid Grand Master

Sydneykid

Posted
Posted
Having a spot of trouble getting my head round the AFM thing. RB20DET PFC like all has 5 AFM options. Yet when you check next to the appropriate one nothing changes?

What does the figure next to the AFM volt setting indicate?

Gee that will help...

TT

Hi TT, it's my understanding that it's for Option #5 so you can set up your own polynomial:cheers:

Targa Tom Proficient

Targa Tom

Posted
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Posted

As far as I can see, the voltage reading with 100% along side refers to the fuel map... So if I want to lean off when the AFM output is ie; 1.28v then I ramp that number 100 down.... so effectively the A/F will be say 95% leaner at that point. The 13b looks like it uses PIM rather than AFM, but the end result is the same.

The actual air flow curves are different... Datalogit people may only know what I am talking about. And yes Skid, If I wanted to run a MkIII pulminator for AFM then I could form my own curve...

Not thick down 'ere, but slow sometimes. :idea:

TT

Chris32 Veteran

Chris32

Posted
Posted

Funny, yesterday I was playing around with my PFC to see what your on about TT :D

I must have left it set to option 5 in the AFM setting, as the car wouldn't idle at all, then I realised I must have not set it back! :D

But I think SK and TT are spot on, its there to setup your own curve

Also, just a quick PFC Q while I have most of the other RB20 PFC owners here, the knock sensor function - is it possible to set the 'check engine' light to come on earlier or later? I wasn't sure if this was adjsutable, and cannot find a option to change it

Cheers, Chris

Sydneykid Grand Master

Sydneykid

Posted
Posted
Also, just a quick PFC Q while I have most of the other RB20 PFC owners here, the knock sensor function - is it possible to set the 'check engine' light to come on earlier or later? I wasn't sure if this was adjsutable, and cannot find a option to change it

Cheers, Chris

Hi Chris, knock sensor is adjustable, there is a threshold (0 to 100) and a setting (0 to 9 , I think as I have never adjusted it). Usual threshold is 60, and flash is set to 9. This flash interval is so you can tell what sensor the Engine Warning light is flashing for. They are located in the Settings menu but it has been a while since I used the Commander to do it, the Datalogit is so much easier.

Hope that helps:cheers:

Chris32 Veteran

Chris32

Posted
Posted
Hi Chris, knock sensor is adjustable, there is a threshold (0 to 100) and a setting (0 to 9 , I think as I have never adjusted it).  Usual threshold is 60, and flash is set to 9.  This flash interval is so you can tell what sensor the Engine Warning light  is flashing for.  They are located in the Settings menu but it has been a while since I used the Commander to do it, the Datalogit is so much easier.

Hope that helps:cheers:

Ok I will have a look, cheers!

any chance you can have a look at this question I posted, your input would be a huge help - http://www.skylinesaustralia.com/forums/sh...ead.php?t=54225

Regards, Chris

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