Steve,
Thx for the informative reply. A firend of mine build the A/F monitor according to a thread at
nriedel@nextek.net. Impdance matching may be the problem. We will try to measure again with a quality meter like a Fluke. The chip may be at fault. Care to do a dump on it if I mail it to you. Also, how much would you charge to burn a more aggressive one?
Thanks again
Paul