Question about Fuel Trims with AFC

~97TalonTSi~ · 10-17-2002, 02:37 PM

I just got my logger hooked up and I played with it a little at idle. I can watch my short term and long term fuel trims. I have no clue what this means...I know I should know this already but can someone explain it to me...why it's in % and what it should be.

Thanks

turbolover2 · 10-17-2002, 11:31 PM

http://www.vfaq.com/TMO/

^^^^^^This will answer a lot of your questions. Enjoy!

~97TalonTSi~ · 10-18-2002, 08:00 AM

Thanks that site is imformative. In RRE's AFC tips, they say that ajusting leaner at a given rpm until the ecu can no longer correct itself, then richening it back 10% will put you at 0-5% fuel trim. Why do they say 0% is stoitch and TMO says 100% is stoich?

www.roadraceengineering.com/newafc.htm