iv got me schrick and its polished !amazed its obd1 not 2 so i need a part for it is the part the piece that bolts to the throttle body and bolts to the manifold itself and more importantly the inside is filthy which cant be healthy is it wise to go at the inside and underneath with a jet wash?? and would polishing the bits i can reach internally be effective at increasing air flow (with it being smoother)?????