[RSX-S777]

I had a strange metallic, low-key "rattle" (is the only way I can describe it) at around 4500-5K+ right before i-vtec engage a while back. Posted here and brainstormed a little with no conclusion. Changed my oil (thought maybe it was low oil pressure) and punched it a few times smoothly up to 7K. I still hear I slight noise if I take it right to the engagement point and then back off the throttle before or as the pin is engaged, but nothing if I push through it into higher rpms. Everything checks out with my car mechanically, so it really doesn't worry me much anymore, and it seems to have quieted as I've broken the car in.