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Old 09-10-2003, 08:17 PM   #1
awd4ever
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Default Apexi S-afc II - JDM vs USDM

I see USDM for sale at around 300-350, where JDM can be found for as low as 200$.

What's the difference?
Is it just the language? Can you get a JDM Safc II with english menus, or change the menus to english?

Thanks in advance
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Old 09-11-2003, 03:28 PM   #2
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bump
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Old 09-11-2003, 04:05 PM   #3
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in terms of fuel correction , there shouldnt be any differences between both, but I don't you can translate it... unless you open it up or something..

Hey, I have the SAFC1, how much does that sell now for if safc2 is 300-350? Too bad I bought mine just less than a year ago and my avcr also... wonder if its worth it to buy the second gen. controllers and sell my first when the new boost controller is released?
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Old 09-11-2003, 08:46 PM   #4
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I'm pretty sure they're all in English. As far as I know, the only difference is that the manuals are in Japanese. At least that's how mine is.
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Old 09-12-2003, 05:14 PM   #5
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and you got the "JDM" Version?

listen, would you happen to know the difference between S-AFC I ver 2 and S-AFC II ?

One turrer shop told me that in terms of fuel correction they are the same, but S-AFC II simply looks different, and is easier to operate. Is that true?
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Old 09-12-2003, 06:02 PM   #6
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and they have more NE points
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Old 09-12-2003, 09:01 PM   #7
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are you talking about JDM version or the S-AFC II ?

i am trying to find this info out so i know what to get...
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Old 09-12-2003, 09:26 PM   #8
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SAFC2 has more NE points. 12 to be exact as compared to the 6 or 8? in the SAFC. So you can tune it more precisely.

And yes, I believe mine was a JDM version since I got it about 6 months ago...and all the documentation was in Japanese.
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Old 09-12-2003, 09:51 PM   #9
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great,
so all the menus on the JDM version of S-AFC II are in english, but the manual (which is a free download from the website) is in japanese?

Can some one 2nd this information plz?
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Old 09-13-2003, 01:17 AM   #10
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They are the same units- biggest difference of course is USDM ones have a warranty from Apex'i, JDM ones don't.

There are loads of performance differences between the 3 (yes there were 3( gen's of the SAFC -

What most people call the SAFC1 was actually the 2nd gen of it it - but I digress

The SAFC (blue screen) version has a simple high/low fuel able, very simple, but works well enough for small corrections (les than 10% eitehr direction).

the SAFCII adds knock sensor monitering, multiple map storage, as well as more adjustment points.
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Old 09-15-2003, 04:03 PM   #11
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what if I don't have a knock sensor? So will this knock function be useless?
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Old 09-15-2003, 05:37 PM   #12
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Yes, but to be honest it's pretty much worthless to begin with. It's just a numeric readout from the sensor and really doesn't clue you in to whats going on.
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Old 09-15-2003, 06:53 PM   #13
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what if you have J&E safeguard?
what's this about "hotwire equiped" does 98 have a "hot wire"...
what is a hotwire ?
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Old 09-15-2003, 07:00 PM   #14
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yes, 98's have a hotwire. Hotwire refers to the type of MAF sensor. It basically is a wire that is heated. As the air passes over it, it gets cooled. The current required to reheat the wire give an idea of the air flowing past it.

As for the safegaurd it's a much better way to detect knock than the safc2.
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Old 09-15-2003, 07:31 PM   #15
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hi, taking this a little off topic,
what's a good way to adjust S-afc? Should i get an A/F meter gauge, and bump up the fuel till i am close to 14.7 : 1 ?
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Old 09-16-2003, 03:57 PM   #16
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the best way to tune your safc is to get a wideband 02 sensor and a digital-meter reading your a/f. Those cheapo auto-meters are really as good as red stoich and green and thats about it.

yes, the J&S is the best option out there, plus it is supposed to provide ignition amplification! I am going to get that for my next turbo mod.. so I can bump the psi to 9.

on a side note, another thing that Apex is screwy with is the injector duty % meter, I mean how accurate is that meter anyways? I never trusted it..
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Old 09-16-2003, 04:56 PM   #17
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I would think the knock meter with a A/F gauge could let you get a little more aggressive with your tune... tune it to the lower end of stoich, then look for any signs of knock... then adjust accordingly... could be wrong though...

the new afc is also smaller and allows you to have 2 presets... like one for racing and one for fuel economy...
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Old 09-16-2003, 07:43 PM   #18
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Quote:
the best way to tune your safc is to get a wideband 02 sensor and a digital-meter reading your a/f. Those cheapo auto-meters are really as good as red stoich and green and thats about it.
I think i already got one of these... it's a 2 prong connector, right?
Does S-afc modify the signal so computer does not go banannas?
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Old 03-15-2004, 11:29 PM   #19
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wow, this thread is so old, and funny this is .. it's mine.

I got S-afc II (latest) at home, but I didnt get instructions with it. Where can i get them in english?

THanks
Alex-
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