W2 408 Dyno results today !

Now that makes me think maybe @mbaird might clamp a timing light to #7 and see if he gets regular pulsing or if it drops out at some point. Easy enough to duct tape it to the hood during a test drive to see what happens under load ;) (only half-kidding). If not, it may just be 'how it is' with that particular motor.

That's actually a very good idea and I've done that on occasion. You would be surprised what you actually find when you bother to test. If you're really serious buy a data logger for your car and then you'll know what is really happening and where.