TRS-Fabrication already has a proven catted and catless downpipe that a lot of forum members are already running, I am one of them running the catless. TRS products are extremely well made and very fairly priced, especially for the craftsmanship. Trent is also a member here and also drives a 2.0 ATS as well, so you have the best of both worlds in that he tests his stuff on his own car and is here if you have any questions or concerns. the customer service is too notch as well.
If you're looking for a downpipe, I highly suggest talking to Trent at TRS-Fab(forum id ihuntv8). he also makes a great deal of parts for D3 as well. his work is proven and as good as you'll find.
other companies that make downpipes include KPE, BNR, and Vermont Tuning
If you're looking for a downpipe, I highly suggest talking to Trent at TRS-Fab(forum id ihuntv8). he also makes a great deal of parts for D3 as well. his work is proven and as good as you'll find.
other companies that make downpipes include KPE, BNR, and Vermont Tuning