baffles

Hi good morning,just got a nasty shock after having a big service,heard this clanging noise a few days ago and could not find out what it was but my mechanic did,it seems that this model R230 from 2003 on has this fault in the fuel tank,the baffle was put in to stop the fuel from slushing around...

Hello, I have a couple of stupid ideas - as you do when your a yobo with a W215 CL firstly, how much do the precats actually do compared to the main cats? are they sufficient to pass an mot with a hot engine for example or do you need the main cats? secondly, i've not got resonator boxes -...