Thanks Robin, that was a good read
![happy2 :happy2:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/happy2.gif)
I won't be doing many (any) track days so no need for the intercooler. So it's probably best to change the CAI and HPFP at the same time,
IF I do?
I will be heading down to a recommended tuner soon but just wanted to get a better understanding before I do. I think PDT have a branch near me (based in NW London).
I am starting to understand what this slippery slope is now
![Laugh :laugh:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/laugh.gif)