ok just got back from a machanic i know after being sick of my car pinging we tested the oxy sensor, static timed the motor again etc didnt help, after connecting some gauge to the oxy sensor turns out im getting incorrect reading under 3000 rpm this is with 2 good sensors 3000rmp + mixes ok, he seems to think its voltage? any ideas, ecu reports oxy sensor error code also tho :/

peter