[Nebster]

I have this continuous pop-pop-pop under load (I think when turbo is spun up) now, too. Newell over the phone thinks it is the popoff valve acting up and needing replacement.

It sounds like there are a lot of reasons it could be happening.

We're going to Miami in a few weeks. I'll try to learn what you have figured out by then, so I can "help" diagnose.