Let's talk TB spacers...

[sporttractuner]

alright ppl, Throttle Body Spacers...Are they just a gimmick? or do they actually work... I just ordered my cat back system today, and was kinda thinking about getting a TB spacer at the same time, but for a 150 bucks, for a little piece of metal, seriously...what do they actually do? I totally understand about the whole plenum thing, but how exactly would the computer notice the change when the MAF is way infront of it...?
Have any of you installed one, did you notice a change...?

 

[FROADER]

Search around, this is a very talked about waste of money on this site.

 

[jeremyc653]

lol i bought one b/c some people said it increased hp. i have one now and it does a lil bit but mostly just makes my truck sound like its turbo charged

 

[loaderopp]

alright ppl, Throttle Body Spacers...Are they just a gimmick? or do they actually work... I just ordered my cat back system today, and was kinda thinking about getting a TB spacer at the same time, but for a 150 bucks, for a little piece of metal, seriously...what do they actually do? I totally understand about the whole plenum thing, but how exactly would the computer notice the change when the MAF is way infront of it...?
Have any of you installed one, did you notice a change...?

Put it to you this way, IF the FACTORY could get more horse's out of a thing like that, they would have done it. Selling horse power is big money=sales.

 

[2000StreetRod]

There is one situation I know of when a throttle body spacer can increase performance. Ford's throttle cables have no adjustment and typically have a significant amount of slack that prevents full throttle when the gas pedal is fully depressed. My Sport has at least 3/8 inch of slop which results in a wide open throttle (WOT) position of only about 80 degrees. A 3/8 inch thick throttle spacer would eliminate the slop and give me 90 degrees at WOT.

However, there are less expensive ways to achieve the same result. One is to attach cable ties or fishing line shot weights on the throttle cable at the gas pedal to eliminate the slop. There are threads on this forum that describe the process. Personally, being 63 years old, I find it extremely uncomfortable to fit under the dash to attach the cable ties. I also desire an adjustable capability.

I'm trying to come up with an inexpensive and reliable way to adjust the throttle cable length at the vicinity of the throttle body.

 

[rileyrs]

we tested a similiar item on the ranger. it was onw of those things you put in the intake hose and it swirls the air, it didnt seem to increase hp, but we on the mileage test we gained .4 mpg, it could have just been cuz of different driving.

i wouldnt spend the money on it. since its basically the same as a tb spacer. if it was 10 bucks id say try it, but for 150, its just not worth it.

 

[CDW6212R]

Ditto, the change to the intake path length is very very minor. The power band(the entire curve) drops in rpm in direct relation to the intake path length. If you add 3/8" or 1/2" to it, the power band is going to come down a very very tiny amount, so little you should not be able to notice it.

Change the TB if you want better airflow, which is more power. Go up to a 70mm or 75mm depending on what best deal you can find.

The SOHC TB is the same as a 4.6 TB, so find a good 70/75mm 4.6 throttle body. Regards,

 

[cmphk9]

Spacers are useless on a fuel injected engine. On a carbureted engine is when they work because the air and fuel mix before the TB. Waste on a ST or Explorer