Tackling Glowplugs and maf this weekend advice needed

[Porkyboy]

Hi guys I'm going to be replacing my Glowplugs and maf over the coming weekend on my 325d m57.
I was wondering if there is anything else I should check or do while I'm there.
I will be taking the intake manifold off would it be worth replacing the the gaskets while it's off?

[Rowe]

i'd definitely replace the seals, as i would fit blanking plugs for the swirl flaps - though i can't remember if the 25d has them or not.

my 30d was leaking oil from the cam cover, so i ended up replacing that, and also the injector seals. Might be worth popping the engine cover off before you start taking it apart, and having a nosey round the engine for leaks.

[Porkyboy]

Looking on realoem it doesn't look like mine came with swirl flaps its an 09 so i think they stopped fitting them at that point. i'll try to keep an eye out for oil then thanks.