Scirocco Register

I'm attempting to change the aux air valve on the back of the inlet manifold. It's proving to be a bugger to get to. Can this be done or is it a major engine out job for 2 bolts? Got top bolt out, nearly?

It can be done in situ, I recently changed mine and although its awkward it does come off. I took a lot of the other hoses off first to make access easier

Thanks mate! Stuck at it and swore a lot and it eventually came off! Patience it a virtu!