I have my 99 225 Quattro in the main stealer today and they diagnosed the water etc in my airbox as being the secondary air pump. I think the cheapest and most fun :lol: way of solving this is to fit an induction kit with seperate little filter to go on the secondary air pump hose, thus stopping any unwanted moisture getting into the MAF. Any thoughts on this?? I was looking at the K & N 57i for about 75 pounds on ebay.......Any one got any thoughts or know of anything better???