Initial D 0 Report post Posted August 7, 2020 Hi all, Looking for a little help... I've picked up a Milltek decat and wanted to install it onto the OEM catback. However it's missing the "donut" flange and instead has a flat one. I'm getting a massive leak from the join now. Was wondering if anyone had done this successfully and how they achieved it! Thanks in advance! Share this post Link to post Share on other sites
