How do I cure a lean condition?

[botchilah]

Originally Posted by Tamago

that's for convenience and quick change-out. it's def not as accurate. most factory turbo cars put the o2 sensor within a foot of the turbo hotside outlet.

Not as accurate? Then that means almost all cars being dyno'd should have blown up already if the o2 sensor isn't accurate :) I had a dyno'd car that ran fine for 9 years (old Evo) and the o2 sensor was mounted on the exhaust tip on a Dynojet 248C AWD dyno.

Experts please do chime in as I myself want to know exactly how things work.

It's not an apples to apples comparison when you compare the o2 sensor in an OEM application to an o2 sensor that's a wideband, 5, 6, 7 wire sensor used for tuning.

The widebands are far more sensitive and I believe either operate at higher voltages or have better clarity reading in micro or mini-volts (whatever the correct term).