View Full Version : air fuel ratio gauge

10-19-2003, 09:41 PM
is it necessary to have one when playing with od pullys? just wondeirng in any of u have one

10-20-2003, 06:48 AM
No, the underdrive pulleys will not effect A/F ratio.
If you are doing your own tuning, then you might want one. The only usefull A/F meter is a wide band. The ones that hook up to your existing switch type HEGOs are just blinking lights.