Hi folks, this weekend will hopefully involve an exhaust change on Mrs P's 3.2 petrol. Do I want to be using exhaust paste/gun gum on the gasket between the cat and the centre section? It looks more like a thin shim than a gasket so I can't really see how it can deform for a perfect seal, hence me considering slathering it with 'something'. Opinions folks?

Put it on dry. Any paste that squeezes in when tightened can break loose and give you an internal rattle, sealant should only be used on male/female joints and then only on the male section as any excess will be pushed out. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

Cool ta, I'll give the mating face on the cat a damn good clean too!

Well that was an absolute ball-ache of a job. I'd like to meet the fool that decided to use pressed in studs and chocolate nuts to join the cats to the centre section! Turned a two hour task into a seven hour nightmare due to a lack of access to the upper three studs. Added joy came along when I discovered I didn't need the £20 sleeve to join the centre section to the back box coz the aftermarket bits are designed to slide over each other.