Hi lads,
I've just fitted the KTec 197/200 system with the sports cat and would have fitted the "Y" pipe but....
previous owner had welded up the flexis and to the manifold. Garage man (enthusiast!) said it needed the the whole lot cutting off and was hesitant to confirm that the manifold would be fit to weld to the the pipe. (Beautiful piece of kit!). So.....
we left the flexis and pre-cat and put on the sports cat +cat-back system. The car felt much smoother, revved freer, and ran up to the redline cleanly. Not even sure it will need a re-map. Lovely sound. Burbles really howls at big revs. If anyone wants a new KTec y pipe, I've got one pretending to be a budgie Cheep, cheep.