Throttle body spacers
Super Moderator
Joined: May 2006
Posts: 8,885
From: Michigan again!
Do you really think that moving the throttle body a half inch, with the fuel and air being mixed in the chamber, is going to do anything? If they did, why not get a 12" spacer and really make a difference?
Don't believe the snake oil salesman who tells you it will increase throttle response, or horsepower. With a fuel injected system the spacer only causes a lighter wallet.
Don't believe the snake oil salesman who tells you it will increase throttle response, or horsepower. With a fuel injected system the spacer only causes a lighter wallet.
4th Gear Member
Joined: Mar 2014
Posts: 1,155
From: Austin, Texas
I'm surprised dirt bag dealerships don't offer them as a "forced" upgrade on their cars - like clear coat protectant.
I'm even more surprised that people actually believe these things are worth the money.
I'm even more surprised that people actually believe these things are worth the money.
2nd Gear Member
Joined: May 2008
Posts: 325
From: Indiana
Put away your pitchforks, torches and shovels 
.... I had one on my 2013 GT for a little while. I already had BAMA tunes and an AIRAID CAI on the car at the time so I didn't notice any power changes/gains, but the AIRAID one DID enhance the sound of the CAI sucking in AIR every time I hit the throttle, which provided me with entertainment. Never check my gas mileage so not sure if there was any change there. But the main consensus on the internet is that they are as useless as stick-on scoops. To each their own.
.... I had one on my 2013 GT for a little while. I already had BAMA tunes and an AIRAID CAI on the car at the time so I didn't notice any power changes/gains, but the AIRAID one DID enhance the sound of the CAI sucking in AIR every time I hit the throttle, which provided me with entertainment. Never check my gas mileage so not sure if there was any change there. But the main consensus on the internet is that they are as useless as stick-on scoops. To each their own.
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
Put away your pitchforks, torches and shovels .... I had one on my 2013 GT for a little while. I already had BAMA tunes and an AIRAID CAI on the car at the time so I didn't notice any power changes/gains, but the AIRAID one DID enhance the sound of the CAI sucking in AIR every time I hit the throttle, which provided me with entertainment. Never check my gas mileage so not sure if there was any change there. But the main consensus on the internet is that they are as useless as stick-on scoops. To each their own.
.... I had one on my 2013 GT for a little while. I already had BAMA tunes and an AIRAID CAI on the car at the time so I didn't notice any power changes/gains, but the AIRAID one DID enhance the sound of the CAI sucking in AIR every time I hit the throttle, which provided me with entertainment. Never check my gas mileage so not sure if there was any change there. But the main consensus on the internet is that they are as useless as stick-on scoops. To each their own.You sure that sucking sound wasn't the money rushing out of your wallet?
In all seriousness though, a TB spacer on modern cars is just a waste of money. The concept of a spacer came out in the days when cars had Carburetors and TBI (Throttle body injection).
For carbed cars, the spacer was usually plastic (phenolic) or some type of insulating fiber. It acted as an insulator between the Carb and the intake manifold. This helped to keep the fuel a tad more dense and also provided a little more distance for the fuel to atomize. In other words, it served a purpose.
For TBI cars, the spacer often had a mesh of wires that spread out over the opening. These wires had electrical current running through them to help atomize the fuel more. Again, they served a purpose.
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