Isn't the easiest option, assuming you've got the TORs just to cut open the under engine cat box and rip out the innards, then weld it up again? I guess you need to watch out for the nasty stuff in the box, and its maybe not the best shape, but for ten minutes work with the torch who cares?
I don't want much more noise though, the TORs are loud enough, but now I have the free Tune ECU programme to play with, the cable, and a mate with a laptop who knows how to sort it out for me. Must restrain the right wrist though, was well over the ton several times today on back roads, so easily, do I really need more power???

