awesome gti seem to think that it maybe a warrantee freindly remap. aproved by vw, cant see it myself 
Awesome GTI - a fecking insult to the hallowed "GTI" badge!

Just think, while they are attempting to remap your finely engineered, German quality GTI, with a US originated APR map, which isn't enabled for homogenised fuel burn - in the very next bay in their workshop, they could be working on a true product of engineering excellence - that is - a KIA PRIDE - ffs!
EDIT: Oh dear, just looking at their web site. Selected Audi B6 A4 range, and they throw in a picture of a B5 RS4 - muppets!
I certainly doubt that Awesome would actually know, nor care if the VW warranty was still honoured, particularly as the APR chip is from the US, where completely different consumer regulations apply.
At least with Oettinger, you will be entitled to a 2-year pan european warranty, on both the actual parts supplied, the workmanship, and any knock-on effects their product may cause.