Taken my boring, bland, lame Subaru and my fat ass and driven off into the sunset with a smile on my face

Yeah it was from MPS garage. It wasn't a fitment issue, the problem was that the inside of the welded joint at the bellmouth wasn't trimmed after being cut out by the robot and had all this metal acting as a great big baffle to impede gas flow at the most critical location. I wish they had paid more attention to the inside of the pipe rather than the external appearance. After all, it's the inside that matters most.
I spoke to Doug who said his CPE DP was fine so I assumed mine was a production error. I also contacted CPE before it was installed and they offered a discount on my next purchase to compensate for the cost of having to pay Cypher to hit it with a die grinder. Better than nothing I suppose.
FOR SALE