I am going for MOT but have a race header (buddyclub,decat) and need to pass the MOT with the OEM header and catalysator. Does anyone know which gasket(s) I will need to fit between the header and cat ?
I have searched for it yes but no succes. I believe this donut ring is already fitted on my OEM header so wondering if I need a gasket also next to it that connects with the cat ?