I have a 98 Viper GTS. Near end of my last track event it started making a weird noise above 4000 rpm near full load. No noise at all below 4000 rpm even at full load. This is very repeatable. video link (not my account): https://www.facebook.com/1000227137...886538033/?type=2&video_source=user_video_tab Notes: Has ~50k miles. I have a roe supercharger set at 5 psi. Have had for years. I have changed spark plugs, no help. If anyone has seen this issue before please let me know. Took it to a local shop and they couldn't figure it out either- they recommended taking to a place with dyno to make easier to reproduce in a shop setting. Also interested in a good place nearby to get the issue fixed (I live 45 minutes south of Indianapolis). Can sometimes get to happen briefly during neutral throttle snap, but is very sporadic.