Right not good news, been to my mechaninc, redone the diagnostics and now cylinder 4 is out so that 4,5 and 6 and 3 is on its last legs, this leads them to think its the cat breaking up!!!!!! not going to be cheap fix then !!!!

Any ideas or suggestions on replacement cats? do you go with dealer parts of aftermarket..... i have bought aftermarket for the c class but did notice a bit more noise and is raspy..... if anyone has replaced cats on SL could you please advise me on which ones you used

Regards

Raj