I don't know about eurojet but I do know that 44DD is at least better than Mag. If Eurojet uses non stainless steel T304 grade than it's the same .
it says on the website of 42dd that the catback exhaust
Our Mk6 TSI 2.5" & 3" cat-back systems are specifically designed:
to bolt-up to our TSI 3" downpipe
as the rear portion of our Mk6 TSI 2.5" & 3" turbo-backs
to be custom fit to a 3" TSI downpipe
to be used on heavily modified vehicles
Our Mk6 TSI 2.5" & 3" cat-back systems are NOT designed:
to connect to a stock TSI downpipe
to connect to a stock 2.5L downpipe
to fit any vehicle other than a Mk6 FWD chassis