Hi Everyone, Just looking for a little help and advice if you'd be so kind! I've been having a poke around under the bonnet of my 1.8t AGU and have seen that the plonker who owned the car before me has fitted a manual boost controller, I've done a search on the forums and found that this is a bit of a bad idea for various reasons. I'm just wondering what the mbc will have replaced? Is it the n75? If so where is the best place to get one from and which 'letter' should I get as I hear there are loads of different n75's. Look forward to hearing your thoughts.