Originally Posted by 08murderedram
thanks for the help man, i have the 18 inch now and ordered the 14 inch on monday and planned on putting it in this wkend. now i am debating on keeping the 18 inch, and jus installing new cats and y pipe and returning the 14 inch. whats your thoughts. will it be a big diff in sound adding the high flo cats and y pipe. i just dont want to put in the 14 and it be unbearably loud
I've heard the 14 inch and it is definitely loud to my ears but exhaust tone is so subjective. If you go with the 14 inch and not like it, you can always go back to the 18.
What I'd do is install the cats and Y-pipe, see how it sounds (it will be a bit louder and a bit deeper) and then go from there.