I wanted a high flowing LOUD setup, I did some research and found these guys. They will do custom setups upon request
Catless, resonatorless, mufflerless,
The design of the test pipe that takes the place of the cat has an integrated "non fouler" for the oxygen sensor. Fit and finish was excellent. It fit like OEM, everything lined up perfectly. There was no turbo flange gasket so be sure to pick one up. All other gaskets are included. Total price shipped was $1,100
Cold starts are beyond loud so be prepared for some hate from the neighbors.
At 3k rpm' it gets ear shatteringly loud outside the car. Interior drone isn't nearly as bad as I was expecting, it's definitely reasonable for the setup.
TLDR: the cheapest complete stainless system, top quality fit and finish OEM fitment.
Would buy again
The downpipe bolts are the worst on the mk5's and 6's
Easiest way to get them off is a pretreatment of some type of lube (wd40, aerokroil, pbblaster ect.) a swivel socket and a couple extensions.
Remove the intake and you can get at it from the side by the battery. It makes it SOOO much easier
Also having someone to help you is also recommended.