These rants tend to bother me. I know most people think all knockoffs are shit, but popular brands aren't always great either. Every once in a while you get a 'bad apple'. Also, some companies (like hks iirc) have their turbos made by a different company, that company also decided to start selling the same turbo without the hks stamp for less. Same exact quality, just not 'name brand'... knockoff?
I had the same thing happen to me on a drive one night, and iinm it was an rs-r exhaust.