Mustang Gt. X pipe cat delete & cat back rousch exhaust?

If I put Rousch or Borla cat back and an x pipe w/ cat delete on the car will it make my car fail emissions test? I realize the cat back is most likely fine, but cat delete I would think it would not pass.

All cars risk dumping their engines if the CONVERTERS and O2 sensors are removed from the system! The reasons are VERY CLEAR! The engine relies on O2 inputs from IN FRONT OF and BEHIND the converters to make fuel adjustments! Disturbing this BALANCE can get you a SUPER RICH MIXTURE that eventually can thin down the oil with RAW GAS< and cause engine and bearing damages! There are OTHER things to do besides butchering your exhaust in this way! I took ford TONS of money in research to get your exhaust to be a good balance of POWER< SOUND and ECONOMY! Check out the exhaust on a BOSS 302 MUSTANG from a few years ago! It has DOUBLE exhausts with SIDEPIPES and also with REAR exhausts and a REMOVABLE flap in between! <<KEEP THE CONVERTERS< and play with the REAR half if you really want to! <<<. A T D E L E T E S>>> are STRICTLY for race cars that have been modifies for all out RACING ONLY! To do this for street use is RISKY and foolish for engine life! BORLA CAT BACKS are SUPERB and get you a MILLION MILE warranty and the factory one is STAINLESS STEEL anyways! I would NOT risk it! KEEP the O2 sensors and the FULL FLOW converters! The FASTEST cars around have VERY EFFICIENT converters that raise their costs IMMENSELY! BUGATTI< BMW< AUDI and AMG Benz are a few of them!

You thought right. If you remove the catalytic converters you will definitely not pass an emissions test.

It definitely won't pass without cats.

Robert has apparently never heard of MIL Eliminators…