Hi. Yeah, you're lookin in the right place. It is in the turbo itself right in front of the
vanes (fins, blades, whatever). Mine is silver, little stamped metal piece, round and
tapered. a snap ring goes into groove machined around inside of turbo inlet to hold it in. Booger to get out. Put mine back in later, just couldn't get past the thought
that maybe it cut down on turbulence or something. If you like whine tho, try
a big open element air filter like a Napa #2790