Originally Posted by
RichieL
Thats an interesting one.......Take the front flexi bit off then smash the internals out of the cat.......Is it easy to get the flexi off as my mechanical skills are not the best.....Although I did take the EGR and inlet manifold off yesterday and gave them a good clean, was well happy with myself!! So a de-cat on a TDCI will release lots more horses.....Excellent! What about this thing on Google I read about the Turbo needing the Cat for back pressure or was that bloke talking out his a$$?
Don't worry about back pressure - pub talk. On your car don't worry. It can be an issue but not for you.
Front flexi pipe it x 2 nuts / bolts and same the other end. Might get away with just dropping off the cat but for the sake of another 2 fixings then whip the whole thing off.