Quoting Removed, click Modern View to see I will agree with Thermal energy! The answer is,,,,
The EXHAUST DENSITY !
Try this scenario, If you take an engine at (Idle) And step on the throttle until the Governor takes over. YOU DO NOT HEAR BOOST. You hear the turbo whining, Not the same and no boost.
(Typically on a diesel Or Gas Engine).
Now Put into gear and power brake it, Or under Load like pulling A hill, You will hear the Turbo spin up and hear it start making boost pressure. Is The best way I know how to explain This.
The (Exhaust Density) Is the UN-BURNT FUEL (Black Smoke) That drives the exhaust side of the Turbo. The heaver the Un-Burnt fuel ( Over Fueling, Un-Burnt Hydrocarbons ) The higher the Boost. Until it's over heated and melts down the Turbo or the Waste Gate opens to relive boost pressure.
All I can Say is Yes Exhaust ! But It's The DENSITY OF THE EXHAUST.
Kinda like driving on A Foggy Day. The engine has more power!
Why, The Density Of the AIR that is introduced to the engine.
(HEAVIER)
I Like You all, And I think there were some good answers,
Just remember DENSITY OF UN-BURNT HYDROCARBONS in the EXHAUST is what drives a Turbo.
So Jacking up your fuel rail is not a good idea! Of what I am saying!! Just trying to help, So you can refer to this in the future. Hope it helps and just remember A Plugged Air Cleaner can do the same and melt it down.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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