S-afc And S-afc2 - Plug And Play Swaps?

[raz0r$harP.UK]

Hey ppls,

Mate's car (coming ex-Japan) has an S-AFC installed. That's the version with the blue screen, six buttons.

The S-AFC II has the rotating knob instead of the buttons, and offers slightly more capability (more tuning points, knock reading, etc).

Without having a look-see at how it's wired up, is it possible to just unplug the S-AFC and replace it with a S-AFC II?? Or are the harnesses different in the newer one??

Thanks..

[paulr33]

safcII has knock sensor support so there will be an extra wire for that, not sure on the rest

[satanic]

Loom is different... the knock sensor is actually 2 wires if I remember correctly (or maybe I'm confusing it with something else).

[raz0r$harP.UK]

Yeah figured as such.. guess I'll wait and see when it gets here. Thanks.

[predator]

knock sensor would only be an optional extra thats offered on the safc2.. its not required for SAFC operation.

[satanic]

It sure does help in keeping your engine alive... well knowing what it's doing to some extent anyway!

[Tangles]

Ive never even looked at my knock sensor.

Here in SA the ecu add-ons are illegal, so mine are 'hidden' from view

"sorry occifer, I dont have a glovebox key, have no idea a SAFC2 & SITC are in there - wow sir dont those screens look p'rrity sir?"

[satanic]

ROFL!

[Tangles]

maybe I can just shout out "I NEVER BROKE THE LAW - - - - I AM THE LAW"

and then crush his Trachea with my mind, Darth Vader style.

LOL

Edited March 23, 2006 by Tangles

[Mr Italy!]

Tell you mate to just stick with the SAFC, does the same job really. If the ecu is picking up knock it will retard timing. The knock sensor does give you something to look at when your sitting at the lights, watching it slowly creep, nowhere near dangerous however... but thats about all it does for me.

That is ofcourse if the warfies and sneaky boat people dont steal the safc outa the car on its way over from japan...

[satanic]

What I want to know is how accurate the SAFC knock reading actually is... I find that mine fluctuates with the weather (air temp)

Lowest I've seen after hour long drive = 0 ~ 15

Highest I've seen after hour long drive = 50 ~ 60

Obviously the air temps are very different on these two occasions.

[Mr Italy!]

Well thats the idea isnt it... the cooler and more humid the air, the lower the induction temperatures right? Thats a broad statement but thats the rough idea yes?

[46n2]

From memory the plugs on the loom fopr the safc are physically different (the SAFC2 is wider) so if upgrading you will need to install it properly.

The SAFC2 only uses 1 wire for knock, the ECU's on RB's use 2 knock sensors hence 2 wires.

IMO it's already got an safc1 no point wasting the money an an safc 2 unless you REALLY want to see the knock reading (like me )

as for accuracy, it varies from car to car because the baseline reading that you set in it (when you first calibrate them) would be different depending on the health of the engine.

[Tangles]

All very good points.

In my opinion, I SERIOUSLY suggest do NOT buy a SAFCII, but do in fact BUY a Apexi Super Ignition Timing Computer (SITC).

Search ebay and pick one up, to compliment the tuning of the original SAFC. Worth every penny....

[Mr Italy!]

^ They're rare as, every time you mention it i search on ebay and i can never spot one.... wanna sell me yours haha