According to the law, only the part that has been replaced is devoid of warranty - along with any part that can be proven to have failed DUE TO THE REPLACED PART!!!
For example - you tune your exhaust - the TB breaks - no connection - the TB is still under warranty...
Or, you upgrade your air intake, and your brake disc fails - no connection...
Now, if you install a turbo, and the boost pressure causes the head to crack or whatever... SOL!
i have a good sticker on mine, and its not a audiforums.com sticker either but its also only one and an inch big, its teh oakley o my friend hooks me up with glasses at the factory and i have it in my car so the company has me as "advertising their product" so i get a huge discount.
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http://www.audiforums.com/search.asp <-- For the NOOBs!
I was thinking of more like hiding the sticker like some where on the skidplate or way out of site so only your true friends will know how insane the horsepower is. (or your mechanic)
changing anything that adds horsepower can "Technically" void warranty if you go to a dealership that is full of A-Holes, Adding horsepower/torque can put the tiniest amount of strain on the engine, the engine wasnt designed to run with that extra 1hp... so just make sure you got a dealership with a good rep of taking care of there customers.
Audi Warranty Info
