speedy02

iTrader: (2)

This is on a 03 chevy silverado 5.3L..This is a WOT log,I dont have a wideband yet.I would like to learn how to read the A/F histogram display..Im still a newbie at this..

luv2spd

iTrader: (1)

I would lean out the areas where its above 910-20.

P Mack

iTrader: (6)

I don't trust the narrowband o2 sensors at all. I compared my dyno log file to the dyno wideband readout and 880 mV ended up being anywhere from like 13.0 to 13.8, and on another run the wideband read the same but the o2's read like 920 mV.