So what makes throttle body spacers not work?
#11
You would be better off saving the money to fix your plenum, then while you are in there cut the bottom 2" off the intake runners at ~60* angle. Then, if you have some spare time open up the restriction over your throttle plates, cut off the towers, and blend the openings on your TB. Do those things and you will see a night and day difference.
#12
[QUOTE=Laramie1997;1988318]
On our trucks, they do not work, and 99% of all fuel injected engines as well. Modern engines are port injected meaning that the fuel is sprayed directly into the cylinder and not the intake like above. In this case, spinning the air doesn't help. It does nothing to help the air to fuel ratio.
In port injection the fuel is sprayed into the port, not the cylinder.
If it's sprayed into the cylinder or combustion chamber it is direct cylinder injection.
Not arguing, just trying to clarify.
On our trucks, they do not work, and 99% of all fuel injected engines as well. Modern engines are port injected meaning that the fuel is sprayed directly into the cylinder and not the intake like above. In this case, spinning the air doesn't help. It does nothing to help the air to fuel ratio.
In port injection the fuel is sprayed into the port, not the cylinder.
If it's sprayed into the cylinder or combustion chamber it is direct cylinder injection.
Not arguing, just trying to clarify.
#14
In addition to what has already been said, another reason is just the design of the intake manifold. If you have ever seen the inside of the intake manifold of our trucks, it is obvious why they dont work. How would you expect the "swirling" effect that the TB spacer creates to stay in effect making the 60* bends that are in the intake manifold?
#15
#16
#17
Just wanna make sure, are you being sarcastic? If not then your out of your mind. Where is this study, I'd love to see it.
#18
It was one of those Holley High-FLow EFI throttle bodies. Link: http://www.summitracing.com/parts/HLY-112-555/
#19
#20