First post for me. I have a 94 12 valve, five speed and today I thought I would replace the relay to the fuel solenoid and also remove the ring in the turbo, which I did. Sure was surprised to not notice any difference. I still can't hear it. I have been trucking for 25 years and sure miss the turbo whine. Anybody else have this same problem? Since I still can't hear it, should I replace the ring or leave it out? Thanks-----Michael