s-afc?
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Joined: May 2002
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From: New Jersey
Originally posted by DuX
https://www.rx7club.com/forum/search...der=descending
https://www.rx7club.com/forum/search...der=descending
Rat
...
Joined: Aug 2001
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From: Tampa, FL
super-air flow converter I believe is the what it really stands for. It changes the air flow signal so that you can adjust how much fuel is used. If you just go anywhere they sell them they usually have a description:
http://66.216.67.51/product.asp?0=208&1=245&3=251
http://66.216.67.51/product.asp?0=208&1=245&3=251
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Rotary Enthusiast
Joined: Nov 2001
Posts: 801
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From: Orange County, California
Well that's what I read on the forum. 
https://www.rx7club.com/forum/showth...threadid=83427
Originally posted by Bambam7
As for S-AFC on an N/A... I've said it a hundred times, you need most bolt ons for it to be worthwhile (ie, full exhaust, intake) since the ECU runs more and more rich the more airflow there is... but you will get tons of gain by leaning the midrange, (up to 20hp) and some up top too....(maybe 5-10) Makes for a great powerband.
But it all depends on how the car is running. Most likely it's too rich though, and can be leaned out for more power.
Oh ya, and stock o2 sensors suck- it's like trying to measure something using a tape measure made of rubber bands...
As for S-AFC on an N/A... I've said it a hundred times, you need most bolt ons for it to be worthwhile (ie, full exhaust, intake) since the ECU runs more and more rich the more airflow there is... but you will get tons of gain by leaning the midrange, (up to 20hp) and some up top too....(maybe 5-10) Makes for a great powerband.
But it all depends on how the car is running. Most likely it's too rich though, and can be leaned out for more power.
Oh ya, and stock o2 sensors suck- it's like trying to measure something using a tape measure made of rubber bands...
Thread Starter
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Joined: Jan 2002
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From: Las Vegas - SIN CITY!!!!
i checked at apexi-usa.com
its a piggy back fuel computer
it modifies air-flow meter signal to optimize fuel-air ratio
retail price: 419.00
i found some on ebay for cheaper, i'm thinking about building my own, concept is simple, tap into o2 sensor so you know what your a/f ratio is...tap in so you can tell the comptuer "what it is" so it will automatically adjust it, get my drift?
its a piggy back fuel computer
it modifies air-flow meter signal to optimize fuel-air ratio
retail price: 419.00
i found some on ebay for cheaper, i'm thinking about building my own, concept is simple, tap into o2 sensor so you know what your a/f ratio is...tap in so you can tell the comptuer "what it is" so it will automatically adjust it, get my drift?
Senior Member
Joined: Jul 2001
Posts: 576
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From: Havre de Grace, MD
i believe it's www.germanautowerks.com that has it for $290.00. I saw it was backordered and emailed and they updated the page and said they're back in stock. Sounds like a really good buy, and I damn near ordered one myself
Rotary Freak
Joined: Dec 2001
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From: sandiego, ca
ok guys comon. You cant get 20hp from a stand alone let alone a S-AFC on an N/A But
If you have a mild street port with ported intake manifolds and full intake and exaust you can make 10rwp. It was proven on the dyno by one of our forum members. Thats prob around 13fhp. Its definatly worth it on an N/A because you can lean them out to make power. But you do need profesional tuning to get the most out of it. Use a dyno or you can hurt your engine. I have installed my own but couldnt tune it right myself so I sold it but bought another one today.
If you have a mild street port with ported intake manifolds and full intake and exaust you can make 10rwp. It was proven on the dyno by one of our forum members. Thats prob around 13fhp. Its definatly worth it on an N/A because you can lean them out to make power. But you do need profesional tuning to get the most out of it. Use a dyno or you can hurt your engine. I have installed my own but couldnt tune it right myself so I sold it but bought another one today.
Rotary Freak
Joined: Dec 2001
Posts: 2,941
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From: sandiego, ca
Sorry I dont get it? I know about taping the blue wire to oxygen sensor but how does that correct the ECU or vise versa for auto adjustments. Its not that saphisticated I dont think. Anyone else?
Thread Starter
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Joined: Jan 2002
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From: Las Vegas - SIN CITY!!!!
well, if you "splice the afc between the o2 and ecu" then the input will be changed by the afc, which will output a different voltage (a/f ratio), and the computer will think its too rich, so it will lean it out, or its too lean and richen it..get it? makes sense to me, right now...
Rotary Enthusiast
Joined: Dec 2001
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From: not in winterpeg anymore
Originally posted by von
ok guys comon. You cant get 20hp from a stand alone let alone a S-AFC on an N/A But
If you have a mild street port with ported intake manifolds and full intake and exaust you can make 10rwp. It was proven on the dyno by one of our forum members. Thats prob around 13fhp. Its definatly worth it on an N/A because you can lean them out to make power. But you do need profesional tuning to get the most out of it. Use a dyno or you can hurt your engine. I have installed my own but couldnt tune it right myself so I sold it but bought another one today.
ok guys comon. You cant get 20hp from a stand alone let alone a S-AFC on an N/A But
If you have a mild street port with ported intake manifolds and full intake and exaust you can make 10rwp. It was proven on the dyno by one of our forum members. Thats prob around 13fhp. Its definatly worth it on an N/A because you can lean them out to make power. But you do need profesional tuning to get the most out of it. Use a dyno or you can hurt your engine. I have installed my own but couldnt tune it right myself so I sold it but bought another one today.
It's not the S- afc that is giving 20hp, but by going way leaner, there is a possibilty to increase power. maybe not that number though. changing the fuel curve is making the power
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Bambam7
2nd Generation Specific (1986-1992)
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Apr 27, 2002 09:04 PM
tommytsunami
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Feb 21, 2002 02:11 AM