Originally Posted by
ECU Monitor Enthusiast
Its true.. to a point !
Are you saying metal doesnt expand ? ...LOL
The air gap is very small and expansion does affect the amount of air passed.
Also, the temperature of the air will affect boost level as the denser it is, the less it will pass.
I will say that the variations will be small the majority of the time.
I suppose anything other than true closed loop boost control is pants and unsafe IMO !
lol the needle would get longer (closing the gap) but then the body would get longer (opening it again) by a couple hundreths of a mm, not enough to effect the flow, surley then air temp (density) would be a factor to take into account lol