[1self]

Originally Posted by sinhead

Whats your opinion about using a Wideband 02 sensor, as the only mod on a stock car. Any real benefits?

I have a Hyundai Accent.

You will need to weld a bung hole in your exhaust for the sensor & do the associated wiring. It will not affect performance an any way, but you will learn a LOT about how the ECU works.