Hello Guys! and Gals!, if theres any Gals here....
Motorcycle; Yamaha MT-01 (same engine as Yamaha Warrior)
with; power commander V and AT-300 (Auto tune)
A mate and I are trying to figure out just how effective the tuning is on the Dyno Jet Power Commander on my bike.
The Auto Tune, kind of tunes it self, using the O2 sensor....
but as we are slowly watching and learning, the O2 sensor(s) dont always seem to be 100%. And if you continually accept the suggested trim values, it tends to a wee bit lean. We think this is because of an old/miscalibrated/worn O2 sensor.
Bosch even put out a service bulletin stating that O2 sensors may have upto a 5% skew.
Bosch Y 258 K01 005-000e technical document.
So what Im trying to figure out, is,
1) Is there a better brand of wideband sensor - -what does everyone here use?
2) How do you measure your afr?
3) how much trust do you put in your O2 sensors accuracy?
Cheers
Alan