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Air filters for S4

Hello all I'm doing a service on the S4 and I would like to replace the 
stock air filter with a Ram Air unit. I've contacted Ram Air USA (as well as 
Sport Wheels) and they told me that they will not be importing that 
particular size due to lack of interest (DAMN). I've also looked at K&N, but 
I've heard bad things about fitment (something about the rubber seal). I 
think Jamex may make a filter for my application but I have 1) no info on 
this and 2) don't know where to get one. Anyone know where I can get Ram Air 
and / or Jamex for this application?

I'm staying away from the K&N cone for several reasons: 1) I have not bought 
off on how pumping hot air (albeit freer flowing) into your motor increases 
horsepower (see EC Feb. issue, Midnight Motorsports Air-Bath system) and 2) 
Since I need to drive clients around I'll probably need to stay away from 
induction noise (especially dump valve hissing and spitting). I've thought 
about fabricating a box that utilizes the stock heat shield and encloses the 
cone that would still be fed cool air through the stock ducting, but this 
seems like allot of work, time, and expense compared to $40 for a freer 
flowing stock replacement.

I wouldn't mind some throaty exhaust noise though, anybody know how the 
Stebro's sound on acceleration? I hear they fit much better than the 
Scorpion systems.