I was looking at a high flow universal Cat, my ? is what size would the inlet/outlet have to be. And when they take off Cat'* do they just cut them off and reweld, it'* not something that'* priecy is it, I've never had exh. work done before. Please Help and TY.

How long do Cat'* usally last, if it does need replacing then I would rather put a high flow on there instead of a stock one, the reason I'm asking is that sometimes in normal driving I get this rotten egg smell when I get out of the car, and does it really bad if I floor it. Please Help and TY.

Still need sizes for inlet and outlet for a Cat.

Take it to a shop..they can look under there and tell ya exactly how much it will cost and what size pipe but. 2.5 for no sc and 3 for sc usually

Whack the cat!!

I've heard that removing a Cat could decrease and even give you less HP, if this true, plus I want to keep the emmisons down even tho we don't have to be checked.

See..if were gonna lose that much torque..then what'* the point of even getting exhaust??

Will "whacking the cat"(sounds like something I do in my spare time) cause the rear O2 to bring up a code?

On ODB II it will bring up a code, but that can be easily beat with a resistor.

How do I go about doing that?