96 Bronco exhaust sys question
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
The second cat is not required unless your "E.N's" (Emissions ****'s) perform a visual inspection and they know how the exhaust is supposed to look in OEM form. Modern catalytic converters combine the elements that were originally done in two parts on these trucks so replacements are going to do the job just as well if not better than the older setup. By '96 I was under the impression that there was only one cat. The chamber at the base of the Y-pipe is a collector so the exhaust is sure to gallop past the O2 sensor down there. Only the OEM Y-pipe has this aftermarket replacements do not and they still pass emissions testing with flying colors.
You also have the option (if it is for off road use only) to use the fooler for the O2 sensor like they use on the Mustang off road pipes..
