300 has two cats?
I have one cat that the two downpipes go into with a single outlet.
Next is what must be the second cat--or is it a resonator?
Then the huge muffler, which by the way is extremely restrictive. I know because I opened it up and all the tubes inside are smaller than the piping before and after, which is 2.25 OD. The muffler's first tube is about 2" which is not too bad and if you cut a hole in the back right after that tube and jam piping in to the hole up to the tube, you will have created a straight through that sounds pretty good and loud. I know because I did it.
Anyhow, I know it's illegal to tamper with the cat, but if it has two cats, does the law require two cats inline or can one be removed since you would still have the one required cat?




