I just recently installed an AEM cold air intake system. It was kinda pricey ($220) but I see definite increase in throttle body response (especially 1st and 3rd gear), sound (sounds great, and after releasing gas pedal it does this cool "spool", alot similar to a turbo,) and it looks great. Doesnt start its moan til about 2k, but it has a great sound. Little increase in mpg if you can hold back on the revs, and definitely gets rid of alot of clutter. Did I mention it looks great. I know K&N has a better reputation, but what sold me was the "dryflow" filter that doesnt use an oil so your M.A.S doesnt get caked in crap. Overall, I love the thing, and would recommend to anyone looking for some great sound, great looks, and noticable throttle body response, plus, now I can finally maintain a constant speed with the cruise control. Sorry for the life story...but there's my $0.02...