The stock o2 sensor is a wideband

[The Spectacle]

I figure this is the best place to put this info. I won an aftermarket wideband in a contest and said screw it and installed it on the Yaris for s & g's. Few observations of note:

- 14.5-14.7 AFR is the cruising and idle target
- The o2 readings DO NOT oscillate during cruise. They reach the target and move .1-.2 points one way or the other to maintain the target. Narrowband sensors do not do this
- From what I can tell, the computer adjusts very fast and very accurately. Was very surprised to see this behavior
- Open loop WOT with the stock intake drops the AFR to 12.5 (rich). After installing my Injen CAI, the target raised to 13.1. Stock airbox is a major restriction on this car. Very noticeable difference between the two
- AFR richens up to a mind boggling 10.9 with the stock airbox right before and up to redline. With the intake its like 11.3 or so (I can't exactly remember, only did it once or twice)

From what I can tell, with just a proper standalone/piggyback computer this motor could easily pull 115-120whp with tuning and regular I/H/E upgrades.