Hi everyone i have been looking at getting the 3" milltek de cat downpipe for my mk1 1.8 20v turbo vrs.

i wanted to know if it can mate to the oe system or does it have to be always fitted with a suitable cat back system.

U can buy size droppers from companies jetex, I have a feeling the 3" miltek has a 2.5" bore after the flex joint as the sport cat one I have does. If your after a decat I have a non brand 3" for sale which has a 2.5" drop with it you can weld on then to get a standard exhaust to it ud need 2.5 to 2.25 reducer and a trim in length to your original pipe