Got my janspeed decat fitted at local exhaust place, what an affort we had to fit it but its on now. It has made the car slightly quicker at high revs so im happy with it that way. The problem is that when accelerating hard in first and second the engine is moving so much on its mounts that the flange where the decat connects to the manifold is tapping on a crossmember or sub frame and causing a quite annoying knocking. I took it back in to tell them and we messed about a bit tryin to sort it but to be honest there is know way of getting anymore clearance so im a bit stuck with it. Has anyone come across this or any ideas on things i could try at the moment im living with it but only just. cheers