Quote Originally Posted by LibraR View Post
And you can't use the goo and compressor as it will stuff up the tyre pressure monitor sensors...

I found an internet image of a Helix unit that appeared to fit inside the spare. Anybody know what that is?
Can you show the image?
I do know that the helix unit does fit on top of the spare in the GTI, this is because there is more depth in the boot due to lack of AWD system. You do need take the rubber feet off the sub but it fits with the spare.
I believe the one that fits inside the spare wheel is most likely the DynaAudio sub and not the helix.