I got a 25HP increase in power when I put in the Lexus trunk mat. You can really feel the difference. My next upgrade is a big orange racing stripe on the car. I figure that's good for at least 10-15HP.
so stockIS3, if that's your only mod, you'll have to change you alias. how bout singlemodIS3? seriously, it's getting tiring to see all of the clear taillights all over. i had someone ask me if my lights were stock, to which i replied, yes!!!!!!
us IS owners are having to compete with the civic/integra/mustang/neon owners. blech!!! although there is no real competition. =]