I have been told that a throttle body spacer is pointless.

Will it help me out or not?

What are your thoughts?

 

My buddy has a portable dyno and he gained .68 hp. I can't justifiy the money for that little increase

 

I have one and get 100 more HP. Seriously, you won't notice its there but maybe a whistle.

 

Nope. Its all Hog Wash!!!

 

In a word: worthless.


The idea comes from the hi-rise manifolds used on V-8 muscle cars with carbs. On a modern fuel injection engine, the spacer does nothing of value.

 

They make the incoming air more turbulent which makes your mpg's worse. I know I drank that coolaid and bought one. That $85 I wish I still had.

 

So it won't improve my gas milage at all?

 

Nope not at all, probly make it worse!

 

MPG gain makes up the costs after 20,000 miles perhaps. I'm sayig this as the owner of one.

 

Turbulence actually increases MPG and power but the addition of just a spacer wont yield any gains. If u couple it with things that increase airflow and fuel then you would see more. Now I think what you was getting at with the turbulent air is when u add restrictions like bends in the intake or extend it. That causes a loss. Actual controlled turbulence at the moment of the addition of fuel cause a better air fuel mixture and makes it burn cleaner and hotter