Or they could say, who's the ******* in the G??

 

from loudest to quietest:

test pipes, resonated test pipes, hfc, resonated hfc.

if you want the "wow, thats an annoyingly loud G" go with test pipes

if you want the "wow, that's a sweet, smooth sounding G" go with hfc or rhfc

 

One little piece of advise.

WHATEVER YOU DO, DO NOT PAIR THE ARKS WITH MOTORDYNE ART PIPES!

I made that mistake and ended up selling the ARK and getting Motordyne e370 exhaust. It will be very raspy if you pair it with ART. I've heard that FI RHFC is the best way to go. Good luck.

If little noises annoy you then just stick with stock cats, anything else will give you some kind'a drone/hiss/RASP. Your car will probably run a little lean after HFC or TP unless you tune your car. The costs adds up, so be wary of the consequences before you decide.