Tuning AFC 2.2

Posted: Fri Jun 10, 2005 3:09 pm Post subject: Tuning AFC 2.2

I bought the ZZP AFC 2.2 and was wondering if I can use my Tech2 to tune it. If not, what can I use to tune? I propally will have to someday soon meet up with someone to help me tune it, if a Tech2 wont do it. Thats the only scanner I have. Thanks for the help.
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2000 PONTIAC GRAND PRIX GTP
VS|TOGâ€™s|ZZP II IC|ZZP Stg II TB|Stg 4 Gen III|2.8 MPS

Posted: Fri Jun 10, 2005 3:18 pm Post subject:

If you can scan and log LTFT and B1S1 you can use the Tech II.

http://homepage.mac.com/mguzzo/tuning.html
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1998 Silvermist GTP Coupe
Bone stock unicorn
1998 True Green Metallic GTP Coupe
Pullied, cammed, intercooled. With a kiddie seat. It once ran a 13 flat.
1998 True Green Metallic GTP Sedan (retired)
Stock: 14.33 @ 96.5
PB: 13.89 @ 101 mph

Posted: Mon Jun 13, 2005 10:14 am Post subject:

What doLTFT and B1S1 mean? Im trying to find out if a tech2 will work or not.

Posted: Mon Jun 13, 2005 10:22 am Post subject:

Posted: Mon Jun 13, 2005 10:34 am Post subject:

I can look at the LTFT and B1S1 on a tech2. Will that work or do I have to save and log them or whatever. I just hope a tech2 can work.

Posted: Mon Jun 13, 2005 10:45 am Post subject:

Posted: Thu Jun 16, 2005 5:56 pm Post subject:

Well I got my AFC today at work and looked at it and read some stuff from Mguzzo and I dont think the Tech2 will work and I ran out of time to relly get in to it at work. One of the guys said just plug it in and leave it in STD mode and drive it. I said I can't do that cause its not tuned and I think it might be bad to the engine until it is tuned.

Posted: Thu Jun 16, 2005 10:18 pm Post subject:

The mini-AFC is just taking the MAFF sensor signal and adjusting it before sending the signal on to the PCM (basically). It adjusts it by a certain percentage. So you can install the mini-AFC, make sure it's set to 100% and the car will act like it's not there. When you go to tune, you adjust this percentage and the PCM thinks the MAFF value is really the MAFF signal x AFC%.

Change the AFC to 99% and the PCM will think there is a little less air coming in than there really is and will add less fuel, therefore going lean. Or go over 100% for the opposite effect.

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