Reasons not to "gut-out" the catalytic converter:

1. It is a pain in the ass.
2. It is not worth the hassle/time/effort/knuckles/ect.
3. Very little to gain from it, except getting high when you stand behind your running vehicle.
4. Turbulence in the exhaust.
5. You could get in trouble for it.
6. You'd be an environmental a**h***.

 

i read an article and all you gain compared to a high flow cat is like literally 1 horsepower. why risk it sounding like dick for 1 pony

 

wouldn't there be a minor loss in gas mileage also?

 

one would think, but i have no idea

 

You are correct.