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I can't find any performance parts for my '01 A6 4.2. Where do i find stuff like ECU or transmission programming, cold air intake, turbo kit or anything else that can increase the power or performance?

I've got the same thing on my A6 4.2 quattro. I had all four wheels aligned and it helped some. I put new tires on and it helped a lot, but still have some swaying sensation at highway speeds and larger dips.

Bought an C5 A6 with a 4.2 and absolutly love it. It has 185,000 mi. and drives like it's just broken in. The only thing that took some getting used to is the slight lag when you first press the accelerator from a stop. It seems to lag just slightly. Does anyone have an explanation? Also on...

Greetings. :racer:Bought an C5 A6 with a 4.2 and absolutly love it. It has 185,000 mi. and drives like it's just broken in. I had the wheels aligned and put some new Goodyears on it and it is great on the highway. the only thing that took some getting used to is the slight lag when you first...