Anyone out there have experience with tuned S4's?
I've recently purchased a 53 plated S4 Avant, and am starting to look into what's available for the n/a engine.
Of course there's alot available for turbo'd engines, but you don't get the same % gains without them...
AMD seem to rule the roost, but are there others, that also perform as well, and it also appears almost obligatory to add Milltek pipes. Are there alternatives?