Feedback on Apexi AVC-R and S-AFC
07-01-2003, 05:09 PM
#1
Registered User
Thread Starter
iTrader: (8)
Join Date: Jun 2003
Location: yea! over there!
Posts: 823
Car Info: white 03 sedan
Feedback on Apexi AVC-R and S-AFC
has anyone installed any of these before? I was planning to install both...is that a bad idea? If not, do any of you have the installation instructions?
07-01-2003, 05:20 PM
#2
Registered User
iTrader: (1)
Join Date: Dec 2002
Location: dover, NH
Posts: 1,162
Car Info: 2001 sub. imp.
Re: Feedback on Apexi AVC-R and S-AFC
Originally posted by in3g_wrx
has anyone installed any of these before? I was planning to install both...is that a bad idea? If not, do any of you have the installation instructions?
has anyone installed any of these before? I was planning to install both...is that a bad idea? If not, do any of you have the installation instructions?
i have to say, it is useless. the subaru computer learns around it. it works for about a tank of gas, then the computer readjusts fuel, and you go back to normal, then if you set maps back at zero, you are off in the wrong direction on your fuel mixture until the computer learns and readjusts. it is more a pain than it is worth.
as far as the avc-r, i have never used one, so i have no idea
07-01-2003, 05:46 PM
#3
Guest
Posts: n/a
Re: Re: Feedback on Apexi AVC-R and S-AFC
Originally posted by mysubaruimp
i installed the apexi s-afc II
i have to say, it is useless. the subaru computer learns around it. it works for about a tank of gas, then the computer readjusts fuel, and you go back to normal, then if you set maps back at zero, you are off in the wrong direction on your fuel mixture until the computer learns and readjusts. it is more a pain than it is worth.
as far as the avc-r, i have never used one, so i have no idea
i installed the apexi s-afc II
i have to say, it is useless. the subaru computer learns around it. it works for about a tank of gas, then the computer readjusts fuel, and you go back to normal, then if you set maps back at zero, you are off in the wrong direction on your fuel mixture until the computer learns and readjusts. it is more a pain than it is worth.
as far as the avc-r, i have never used one, so i have no idea
07-01-2003, 06:11 PM
#4
Registered User
iTrader: (1)
Join Date: Dec 2002
Location: dover, NH
Posts: 1,162
Car Info: 2001 sub. imp.
Re: Re: Re: Feedback on Apexi AVC-R and S-AFC
Originally posted by impreza7
Wow, really? I've installed and am running both of these on my gc8, and I've never encountered this problem. My A/F ratios stay exactly how I set them on the S-AFC. As far as installing them, its not hard, you'll just need a wiring diagram for your ECU, and some spare wire incase you need to lengthen the wires any. The instruction manual tells you exactly how to tap into the ECU harness. I would recommend sautering the wires together. my throttle sensor wire come loose, and it's a pain to have to reconnect. You'll want a wide band A/F gauge for tuning. The AVC-R is sweet, and easy to use. (After you get the bar-psi conversion down.)
Wow, really? I've installed and am running both of these on my gc8, and I've never encountered this problem. My A/F ratios stay exactly how I set them on the S-AFC. As far as installing them, its not hard, you'll just need a wiring diagram for your ECU, and some spare wire incase you need to lengthen the wires any. The instruction manual tells you exactly how to tap into the ECU harness. I would recommend sautering the wires together. my throttle sensor wire come loose, and it's a pain to have to reconnect. You'll want a wide band A/F gauge for tuning. The AVC-R is sweet, and easy to use. (After you get the bar-psi conversion down.)
what is the map you are using? and what mods?
07-01-2003, 06:52 PM
#5
Guest
Posts: n/a
Re: Feedback on Apexi AVC-R and S-AFC
Originally posted by in3g_wrx
do any of you have the installation instructions?
do any of you have the installation instructions?
http://www.apexi-usa.com/documentation.asp
07-01-2003, 07:38 PM
#6
The question is what year car you guys are driving. The reason I ask is because the 98 and 99 MYs are MAF sensors while the 2000 and 2001 cars are MAP sensors. That would make a huge difference. I know for sure that if you the MAF sensors, the engine will take longer to learn it and it will constant relearn because of the amount of air flow. However, the cars with the MAP sensors are much smarter and go obviously by pressure.
As for the AVCR, I have one in my RS Conversion right now and it causes some hesitation and at points I can feel my ECU pull timing. I would have to honestly say that at points this thing is useless.
The SAFC and the SAFCII don't do anything for new cars because the ECU is too smart and learns things quickly. The AVCR on the other hand does something completely different. So I would say it is good if you plan on having boost on tap and what not but I would say just have the ECU control boost if you can.
As for the AVCR, I have one in my RS Conversion right now and it causes some hesitation and at points I can feel my ECU pull timing. I would have to honestly say that at points this thing is useless.
The SAFC and the SAFCII don't do anything for new cars because the ECU is too smart and learns things quickly. The AVCR on the other hand does something completely different. So I would say it is good if you plan on having boost on tap and what not but I would say just have the ECU control boost if you can.
07-02-2003, 05:52 PM
#8
Guest
Posts: n/a
Originally posted by ImprezaRSDriver
The question is what year car you guys are driving. The reason I ask is because the 98 and 99 MYs are MAF sensors while the 2000 and 2001 cars are MAP sensors. That would make a huge difference. I know for sure that if you the MAF sensors, the engine will take longer to learn it and it will constant relearn because of the amount of air flow. However, the cars with the MAP sensors are much smarter and go obviously by pressure.
As for the AVCR, I have one in my RS Conversion right now and it causes some hesitation and at points I can feel my ECU pull timing. I would have to honestly say that at points this thing is useless.
The question is what year car you guys are driving. The reason I ask is because the 98 and 99 MYs are MAF sensors while the 2000 and 2001 cars are MAP sensors. That would make a huge difference. I know for sure that if you the MAF sensors, the engine will take longer to learn it and it will constant relearn because of the amount of air flow. However, the cars with the MAP sensors are much smarter and go obviously by pressure.
As for the AVCR, I have one in my RS Conversion right now and it causes some hesitation and at points I can feel my ECU pull timing. I would have to honestly say that at points this thing is useless.
07-03-2003, 06:28 PM
#12
Registered User
Thread Starter
iTrader: (8)
Join Date: Jun 2003
Location: yea! over there!
Posts: 823
Car Info: white 03 sedan
so what kind of boost controllers would you guys recommend? I wouldn't wanna waste my money on something that's useless...Also, what other electronics would be good to have? By the way, i prefer info on 02+ WRX
Thread
Thread Starter
Forum
Replies
Last Post
demonbugeye
Hawaii Classifieds
7
07-28-2009 03:10 PM
minsormike
Used Aftermarket Car Parts For Sale
9
04-13-2005 02:19 AM