Originally I had an eBay exhaust, too loud. Then I got a used apexi ws2 with a comptech header. I stopped using my itr header because fabricating would have been needed and didn't have the means at the time. At the point of this pic, I was switching back to the ITR header. Yes I killed its value by welding on the test pipe, but I don't plan to sell it and it's hard to find a mating flange for the itr header. Super quiet with the apexi ws2 set up.