I just chipped my S-line, quattro '07 B7 Avant "dog car" with excellent results. I went the APR re-mapping route. One thing to consider is the PVC valve had to be replaced (it's a very sophisticated version of a PVC valve) as oil was escaping throught the oil filler cap as the turbo boost increase, increased the oil pressure inside the engine. This was done under warranty. BTW, I also did the Millitek exhaust and the carbon fiber induction (I forget the name of the company). This "dog car" pulls very strongly and is the perfect compliment to my R8. The color also matches the blade of my R8...
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