I have a 2004 A4 that's pretty much stock and am thinking about taking it to a dyno shop here. I am going to have them tune it for max performance, firm up the shifts, decrease shift time (especially the 2-3 shift, it takes forever), and increase my top speed limiter to 200. With no mods except a K&N filter, how much extra RWHP do you guys think they will be able to squeeze out of her? Isn't the stock RWHP for a 2004 somewhere around 290? I would like to at least get 10-20 extra hp if possible. What do you guys think?