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Old 04-24-2001, 03:07 PM   #1
CHACHI
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Member#: 5527
Join Date: Apr 2001
Location: CRANSTON RI USA
Vehicle:
2000 impreza rs
blue ridge pearl

Post s-afc in 2000

<FONT COLOR="Navy">has anyone installed a s-afc in a 2000 , if so did you notice anything?</FONT c>
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Old 04-24-2001, 03:25 PM   #2
Swivel1000
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Join Date: Mar 2000
Location: Houston, TX
Vehicle:
2004 Jeep Grand
Cherokee Limited 4x4

Post

Id do some searches. I understand you are looking for new information as well, but there are some people which have discussed this.
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Old 04-24-2001, 03:27 PM   #3
tmat3
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Member#: 2817
Join Date: Nov 2000
Location: NYC and Troy, NY
Vehicle:
2001 Impreza 2.5RS
BRP

Post

What is with SAFC today? I already answered 3 posts about SAFC today.
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Old 04-24-2001, 04:18 PM   #4
Scoober01
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Join Date: Jan 2001
Location: Englewood, CO, USA
Vehicle:
2001 Impreza 2.5 RS
Blue Ridge Pearl-Red acc

Post

Tmat's cool. j/k.

From what I'm told the S-AFC will work in a MY00-01 but....the stock ECU will relearn and adjust for the AFC setting basically rendering the AFC useless, unless you reset the ECU every month or so.
I was one of the other AFC Q's tmat answered to bad he was wrong. j/k again.
hope that helps man.
Ryan D.
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Old 04-24-2001, 07:50 PM   #5
Gerry
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Location: Long Island
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It's a waste of money. I have it in my MY01 and does absolutely nothing but look nice. If you want you can spend the $300+ for a cool looking box...Gerry
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Old 04-25-2001, 01:39 AM   #6
suberboy
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Chapter/Region: RMIC
Location: Salt Lake City, UT
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2008 GRB
Red

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i don't know that it is totally useless. i have one in my 2000 and a shop here in slc tunes it for me before races and you know that little hesitation that some people get at around 4000 rpm well it is gone when he tunes it but about a month later or when it gets colder it comes back and then he tunes it out again. it would be so nice if we could dyno it and see what happens over a couple of hours, days, weeks, etc.
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Old 04-25-2001, 02:20 AM   #7
NA Impreza
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Location: Vancouver, B.C., Canada
Vehicle:
1999 rs
white

Post

i plan on getting one and was wondering if you only have to tune it once....it'll be a hassle to have to tune it every month or so......by the way, i drive a MY99 RS
thanks
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Old 04-25-2001, 06:30 AM   #8
bratmantlz
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Chapter/Region: RMIC
Location: colorado springs colorado usa
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88 626 Turbo
white

Post

i adjust mine depending on the weather. car doesnt like weather changes....
Brian
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Old 04-25-2001, 12:34 PM   #9
JaiMak
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1999 Top Scoob #4
Satin White Pearl

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The thing is with a SAFC on a 2000/2001, is that the ECU will relearn the maps over time and driving, that being said, if you tune for Hi-Throttle, generally speaking the ECU will not be able to adjust because it doesn't see the hi throttle map terribly often.

Lo throttle would be rendered useless though, but Gerry is right, it looks pretty cool.

James
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Old 04-25-2001, 02:23 PM   #10
Fish
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90' MX-5/11' DGM STi Sdn

Post

I've got a S-AFC and a minam intake on my 2000.. and the S-AFC really cleaned things up for me.

but I did notice now that the cool weather has passed and it got warm.. I think I need to retune it again.. feels sloppy again when it gets warmer.
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Old 04-26-2001, 03:31 AM   #11
cj917
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Join Date: Dec 1999
Location: boston
Vehicle:
MY96 outback wagon

Question

i don't understand what it means that the ECU will re-learn the maps over time?

can the ECU re-learn the maps when it's in open-loop? i don't know... i don't think so though, as i was told that's what open-loop is: the ECU disregards the feedback from the o2 sensor and complete rely on the fuel map it has

and if the car's in close-loop (which is majority of the time), the SAFC doesn't get a chance to do anything anyway, right? as the ECU supposedly keeps adjusting the fuel delivery according to the front o2 sensor's feedback

i suppose when people say the ECU "re-learns", they mean the ECU makes relatively small adjustments to adapt to the driver's habits (or new engine mods as they'll throw things off a bit for the computer... eitheway the computer's already doing that constantly in close-loop mode, to a greater or lesser degree), not the ECU learning the optimal settings when in open-loop mode
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Old 04-26-2001, 08:15 AM   #12
JaiMak
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1999 Top Scoob #4
Satin White Pearl

Post

That's why I said the AFC only works with the Hi throttle map, because the car goes into open loop at WOT. IIRC
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Old 04-26-2001, 09:42 PM   #13
CUNNINGHAM
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JDM RHD GC8, 08 LGT
05 OBXT 00 RS-T 05 STI

Post

Just Buy it. You will love it and notice gains in many areas with it. Have I ever failed you, No. So tell me when to place the order.
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