FaSSt9602
New member
See my post below, I modified it to pass visual inspections, with zero performance impact! Also if you wanted to keep your cat and have a true 4" turbo back you can do this ( minus gutting) and fit 4" pipes on either side
I've had them bang on my cat with their mirror before when doing the visual....:doh:
You can certainly tell a difference between a stock cat and a "modified" one. :thumbup: