i wished i could put my finger on what these people were called because i am sure they have a website that has all of this stuff on it. they arent just some back yard made chips they have a whole line up of cars. they drove a 18 wheeler to the track and unloaded the cars from it. they dont just stick the chip in and run it the chip it and tune it is what they told me. I looked under the hood of the vw but not the audi. all i saw what a plastic looking motor and a turbo. he had stock exhaust, an intake box, nothing shiny under the hood. as far as the audi i cant promise that it was stock besides a chip. he said their chips bumped the boost to 15 or 16 pounds and since they tuned them with the chip in it they wont blow. i did hear a bov though. like i said you dont have to believe it but if i ever find them on the web then you will have no choice but to become a believer. and if you were so big into audi and vw then why dont you know exactly who i am talking about. they are known world wide.http://www.goapr.com/Audi/whyapr/index.html found em no you can believe it.