So how far can we go with stock exhaust? Other than the "cat back" like some clubs.
It looks to be wide open assuming you don't make everyone deaf?
I picked up a lightly used high flow legal cat a few months ago is this legal in stock? (My new 'free' factory cat cost $1100 so I'm thinking about putting it in the attic for backup.)
It appears one can use any header to tailpipe combo and still stay in stock? I am assuming one cannot gut their cat and stay stock as that's theoretically illegal in all 50 states except off road.
Like someone said: If it doesn't say anything it's probably okay with FAST?
