[1ViciousGSX]

I have the AEM wideband controller & add-on gauge. I can verify that there is a little delay in the reading. It's easy to tell with no lift to shift, My front O2 sensor picks up the change by about .3-.5 sec before the wideband. Now my wideband is also farther down the exhaust stream, between the engine block and firewall, but at high rpm WOT exhaust velocities, it shouldn't be that much of a delay. We are only talking about the distance from the O2 housing to the other side of my flex section just past the oil pan. Good to know the reading I get is acurate though.