I've got a Forge FMDVR with the twisty top on my cupra r. When I back off the throttle I can hear it recirculating, but the noise is spoilt by the sound of it reverberating which almost sounds like the valve is bouncing for a while after.
Do I need to fit a stiffer spring or is this normal? I have got two other springs in the box, one yellow and one blue - am I using the right one?
Do I need to fit a stiffer spring or is this normal? I have got two other springs in the box, one yellow and one blue - am I using the right one?
