Need advice on what service needs to be done

[binkerss]

New to the forum.

I picked up a 6 speed 2016 base model GTI about a 18 months ago at roughly 100k miles. I did spark plugs and some basic diy mods (snow filter, clutch stop, cdv delete, performance pads), and I've been doing an oil change every 5-7k miles. I am now coming up on 123k miles and my amazing girlfriend recently picked up an accessport for me. Now that I am planning on going stage 2 in the near future what other maintenance items need to be taken care of? I'm planning on spark plugs and another oil change soon, but what else do I need to look into? Walnut blasting, pcv, brake and transmission fluid?

Thanks in advance for your help, I've been lurking for far too long.

 

[binkerss]

Forgot to add this, I seem to have a little bit of a rough idle and am wondering if it's pcv related, carbon build up related, or motor mount related. Anyone have any ideas?

 

[parapraxis24]

My intermittent rough idle was from a fully collapsed motor mount. It’s an easy job, maybe an hour, and not terribly expensive, so might be worth it anyway at 123k miles.

I’m not sure what the failure rate on the PCV is, but again not hard to do so I don’t see a downside to replacing it now, other than possibly not needing it so you throw money away.