jeus there are a lot of angery new people on here, with little respect sometimes

if you want a turbo or turbos on a 4.2 I recomend selling your 4.2 and just buying an RS6
the A6 4.2'sare worth13k-25k and a turbo or supercharger run 6k-10K+ so your already looking at 19k-35k just to have a stock 4.2 with an aftermarket setup that voids all warentys.

I have seen RS6's for 30k-90k and come stock with a 4.2TT engine, the sought after interior, bumpers, flares, wheels, suspension, etc.... plus it is a stock car with a warenty and the dealership can still work on it. and they are tested from the factory. plus who do u know that owns a RS6???? I have only seen like 3.... I say just buy a RS6.

 

It is amazing how a new apple, when it is bad, can ruin an otherwise congenial forum.

 

And you hold a grudge like a second grade girl. Sorry i hurt your feelings. It's time we all moved on...

 

I have a 2011 A6 4.2 that I was kicking around the idea of putting a super charger in it. However, I agree that it would be in the $10K-$12K price range.
If I could find a supercharger kit in the $4-$5 range I would seriously consider it.
Hell, the Audi S6 is a 4.2 with a turbo or supercharger in it, and it makes 500hp.
Does Audi make their own turbo kits or do they buy them from a specific manufacturer? Still, again, it would be pricey;which, begs the question, buy an S6 to begin with from the start.

Joe B.