I've been trying to find the link to the area where there was a schematic and parts list to build your own A/f meter. Been wanting to put one on my turbo as I'm going be getting my hybrid finished up soon, and want to keep an eye on things. So if anyone remembers where the link is, (although I think that it was on Brians site at one time, not there now though.) Thanks everyone. I'm heading to Radio Shack this weekend, so the sooner the better. Thanks.

I believe all you need is a voltmeter and an O2 sensor. If the voltage is at a certain level its rich, another level its good, another its lean... dont remember the voltages off the top of my head though.

most O2's only run from 0 to 1 volt, so you neet a pretty fine voltmeter to do any good. Also a large display one would be needed to that you could keep an eye on it while you were driving. I want the lights for mine, it's going to go in where the stock radio would be, and the lights make it so that you can see it out the corner of your eye without haveing to look directly at it.

Adam, I got mine from this guy, his name is Ian

ianfs (at) cox.net

If you email him, he may send you the diagram and parts list for it.

It's a nice "package" connects to the 02 sensor as most do.