[Technick]

You know the cats are not THAT restrictive! You know the 03 Cobra puts down about 370 H.P. to the wheels stock! With cats! If they were such a restriction they could never have made that kind of power. Now on the Cobra removing them frees up a lot of power, BUT you have a lot of power to begin with. In my experience having cats or no cats is only about a 5-7 H.P difference on a 300 rwhp car. The 96 Mustang is an exception as it has 6, yes 6 cats from the factory. a bit of overkill and Ford went back to the 4 cat H-pipe in 97. Just look at how fast a 99 or up GT is with JUST the addition of a 6-9 psi Supercharger! Look at the Steeda Q cars, the Roush cars, Look at the Lightning! lots of power thru the stock cats! Maybe they are not as bad as made out to be! Now if we are talking about ANYTHING older than 97 then you have a very valid point about the cats. The older cars ect just did not have the advantage of technology that is available today when it comes to exhaust systems and cats in particular.