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Published on Aug 24, 2008
Recently deleted the rear converters. On the 2004 - 2005 F150s with 4 cat systems, the rear cats are not O2 monitored, so cutting them out frees up some restriction, gives you more volume and aggression, and does so without setting the CEL. So all in all, its still pretty much legal, has cats ( two front ones ) and the light is out, no leaks.
Exhaust specs as stated in the video,
Stock Manifolds Rear Converter Delete 2.5" True Duals w/ X pipe Magnaflow 11" Body Mufflers Magnaflow 4x18" Rolled Tips
Mufflers part #11366 ( $69.22 ea ) Tips part #35117 ( $55 ea ) Mandrel Bent 2.5" system ( $230 ) Flanged 2.5" pipes with 4 U clamps ( $31 )