my cars been modified and havent had the computer put in . Im running a t04 turbo right now and with the afm in its origianl position i suffered from stalling etc. so i placed my afm just before my plenum only place i could put it wth my piping setup, this was before reading this thread its been like this for about a month and a half now, ive had no more stalling problems car runs fine but its only a short cut until i get the computer in, its not worth the hassle of doing.. but yes u get loud flutter,i dont get the deep noise but a high pitch pewww peww louder than the vl's but yeah. other than that its not worth the effort. also my turbo hasnt suffered even though yes they do tend to get shaft play i havent had that effect yet, and im running 12 psi atm.