If I cut my cat, does that increase the noise level of my stock exhaust? I got 300,000 km on my teg and I am pretty sure the cat is getting close to clogged. Any tips?
Cut your cat? If your cheap you could take your cat off and take a large metal pipe and hammer the crap out of the stuff inside, hollowing it out. This will the increase the noise, leave a smell, and increase flow.
you could also cut your cat in half legth wise and put a pipe inside it, then weld it back together. This way it flows better and still looks like a cat. A cop could still tap it on it though to find its hollow, giving you one hell of a ticket. I would suggest you just buy a high flow cat.