Just been and had the codes read as for the last couple of weeks the wifes car has been running crap! Eml was on and the only codes showing were for multiple misfires, these codes were cleaned and a quick drive round then checked again, same codes but as we were looking under the bonnet my mate noticed the cat starting to glow red! This obviously ain't good! Recon this could be part of the running issues? It's already been back to audi for the coils and I've got set of plugs on order!