Boost gauge and hypermiling theory

[snailexpress]

(03-08-2018 )dhirocz Wrote:  So you're saying it's more of a function of intake cavitation? I was thinking it was valve timing and boost vs rpm...which had me wondering if there is more MPG hidden in the cam profile.

I don't know the physics of this but sometimes it quit and fuel mileage is up. I can hear air in the intake bouncing back little bit like some resonating cavitation. When it quit the air flows smoothly
It does same on 871 and 2250.
Timing and overhead was checked numerous times by different people. Mandated and deleted engines the same.