In the most recent issue of Car & Driver, they chipped a Passat that they were performing a long term test on. They seemed impressed, and their improvement in horsepower and performance was substantial--- 195 hp and a decrease of 1.3 sec on 0-60 times. I wonder why they didn't use of of the more common (at least to us) chip suppliers, and I wonder how this chip compares. They reported chip upgrade cost of $407.<p><br>'99 1.8QMS <br>monitoring chip info for future decision

I chipped an 89 944S2 with an Autothority chip and it was fantastic. Quite honestly, when I got interested in A4s, I was surprised that everybody wasn't using an Autothority chip, and had never heard of Wett, Neuspeed, Hopper, etc. I'm sure they do it right!<br>

The VW ran great the whole time and never had any sort of problem warranty or other. My success with the AutoThority chipped VW led to my purchase of an A41.8T which I chipped. (Neuspeed K04)