Has enyone used a straight through replacement pipe for their cat converter?
I am looking at getting one made up for track days and drags, but not sure whether to keep the Lambda sensor just behind the cat.
My thoughts are that, removing it will cause the car to run rich as it is missing a sensor and may try to run in a " safe " mode. Or if I leave it, it will cause the sensor to read worse pollution levels than if the cat was present and it may run lean.
I am currently runing a full 3" systems, PFC, FMIC, 550cc injectorsand T3/T4 turbo.
If anyone has used one let me know if you have had any ill effects, and any noticable performance gains/losses.