I recently got the Strup headers installed on my '04 Coupe. Now for some reason, whenever I shut the engine off after driving, after about 10 seconds of silence, I hear a loud whiny whistle noise coming from under the hood. It starts out quiet and then gets louder, staying on for about 10 seconds.

I opened the hood and it seems to be coming from somwhere deep in the engine bay.

Could it be some kind of exhaust leak, as there are no odd smells, no CEL, and no other problems of any kind since the install?

Thanks.

Jason

 

Strange, anyone else experiencing this? I have Strup headers sitting in my garage waiting to be installed. Anyone have any ideas what this could be or has anyone else experienced this?