Quote:
Originally Posted by m4a1mustang
Some people pack steel wool in the O2 bungs to filter the exhaust gasses and trick the sensors. The defoulers just back the O2 sensor farther out of the exhaust stream for a similar effect.
The latter is probably better for longevity. I'd imagine the steel wool would rust away after a while.
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I've had the Steel Wool myself now for going on almost 2 years, no visible signs of rust or wool falling out the back end. And no CEL's.
Headers myself, J bungs are attached, but I still wanted the comfort.