throttle body spacer?
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Senior User
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throttle body spacer?
Hey Everybody, I'm a newbe to FTE. Dont worry, the 454 is a gun thing not a Chevy thing.
Has anybody had any success with throttle body spacers? What kind of increases did you find? I have a '99 Superduty 250 w/5.4, K&N intake kit, and Flowmaster exhaust. Will a spacer make any dif, or should I save my $ for a tuner?
Has anybody had any success with throttle body spacers? What kind of increases did you find? I have a '99 Superduty 250 w/5.4, K&N intake kit, and Flowmaster exhaust. Will a spacer make any dif, or should I save my $ for a tuner?
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If you get a minute check out the link here, it will help you to navigate around and understand this site.
https://www.ford-trucks.com/forums/s...d.php?t=300691
We are happy you have chosen the best source for Fords!
Enjoy FTE and The State Chapters are located at the bottom of the main forum page.
JOIN CLUB FTE -SUPPORT THE FORUMS!
See you on the boards.
….
Elder User
Joined: Feb 2004
Posts: 772
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From: Mount Airy, MD
Save your money! I'm not just saying that on a whim. I've learned the hard and expensive way that little bolt on things such as larger throttle bodies and mass air meters are a waste of $$$$$. A throttle body spacer is not going to give you any noticeable increase in performance. Go with a tuner, that would be your best bet. BTW, welcome to FTE!
Butt-Head
Joined: Apr 2004
Posts: 9,448
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From: Reed Point, MT
To elaborate on WHY the TB spacer is ineffective:
1. If an extra inch of material is all that's required to make that much difference in power and economy, don't you think that the factory would have already done it. Think about it, the factory is already trying to squeeze as much economy and performance out of the engine........
2. With port injection, only AIR is going through the throttle body. There's no added atomization/mixing effect happening. What's the point?
3. Swirling the air? Please. If all it takes is one inch of spacer to induce a swirl into the incoming air, what do you think the 12-20 inches of corregated intake tube do?
What about surface imperfections INSIDE the plenum?
Just my $.02.
Cody
1. If an extra inch of material is all that's required to make that much difference in power and economy, don't you think that the factory would have already done it. Think about it, the factory is already trying to squeeze as much economy and performance out of the engine........
2. With port injection, only AIR is going through the throttle body. There's no added atomization/mixing effect happening. What's the point?
3. Swirling the air? Please. If all it takes is one inch of spacer to induce a swirl into the incoming air, what do you think the 12-20 inches of corregated intake tube do?
What about surface imperfections INSIDE the plenum?
Just my $.02.
Cody
Lead Driver
Joined: May 2003
Posts: 9,303
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From: Lyndonville, Vermont
There are many scams out there this is one of them. Along with intakes and all that other bolt on stuff. I wish there was a regulating body that would outlaw trickery and deceptive hp claims. A tuner a turbo or super charger will add HP but the other things are ridiculous..You might see some more HP but at 5000 rpm who drives around town at 5000 rpm. Also some of the bolt on stuff kills low end performance so some guy's end up removing the junk. Headers and exhausts are another thing you have to watch out for.
Dick
Dick
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Joined: Dec 2004
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From: NY
Dyno tests show that increasing plenum volume can increase torque output.
Simply put, increasing the volume of the space INSIDE the throttle body butterfly does improve torque.
The increase in volume that a spacer offers offers no real gain.
Simply put, increasing the volume of the space INSIDE the throttle body butterfly does improve torque.
The increase in volume that a spacer offers offers no real gain.