Throttle Body Spacer

[silvergtjrad]

A TB spacer is also going to change the volume of the plenum as well, which will move the powerband a bit.

[2FastChevy]

I don't buy it. I bet if you did back to back tests with someone changing it when you came back out to drive to lunch you'd think it was still on... I had to do big mods that changed a drastic amount of the intake manifold design before I felt differences. I'm talking going from small port to almost double size large port, large plenum. Biggest change was 65mm TB at the end, which seemed to unleash more of the intake swap. I bet a 65mm on the stock intake manifolds would have just resulted in maxing out the air flow at 50% throttle.

I'm not trying to start any arguments here but you put on a larger throttle body so that its greater volume would help it injest more air no? Well wouldn't putting a spacer behind your throttle body increase the overall volume of the unit and have a similar result in helping the motor to take more air in?

[2FastChevy]

Dyno it or back to back track runs would help. There is no way that ram air and a TB spacer "makes it go from full throttle to half throttle as the same power output".

What exactly are you trying to say here? Doesnt cooler/ more dense air being injested to the motor make the rpms increase? All I said was my overall pedal effort to get it up to speed is reduced overall and that It feels like the motor is pulling harder compared to the bone stock intake system, which we all know is quite restrictive. With the stock intake on its like the motors breathing through a vacuum attachment for the cracks in couches or the corners of stairs...

[SappySE107]

Dyno it or back to back track runs would help. There is no way that ram air and a TB spacer makes it go from full throttle to half throttle as the same power output.

[IsaacHayes]

I don't buy it. I bet if you did back to back tests with someone changing it when you came back out to drive to lunch you'd think it was still on... I had to do big mods that changed a drastic amount of the intake manifold design before I felt differences. I'm talking going from small port to almost double size large port, large plenum. Biggest change was 65mm TB at the end, which seemed to unleash more of the intake swap. I bet a 65mm on the stock intake manifolds would have just resulted in maxing out the air flow at 50% throttle.

[2FastChevy]

Tb spacers on 3100 v6

I have a throttle spacer kit from Airaid on my 99 chev lumina and I find it does help with overall throttle responce and contributes to a reduced amount of peddle effort even if it doesnt add alot of boost to the top end hp.

When the intake was bone stock at certain driving speeds I would have to put my foot to the floor to get the tranny to downshift and give me more power, even with a custom ram air which i installed didnt change the pedal effort much but there was a noticable gain in power.

The ram air causes much more of a dramatic responce with the throttle spacer in my experiences. Speeds where it would previously need full throttle to down shift I now only have to use about half the pedal effort to get the same result and instead of having to hold the pedal almost 1/4 of the way down to hold my speed at 120 kph(75 mph approx) i now just need to hold it at a light press as if i was doing city speeds. Not only that the motor honestly pulls noticably harder with the set up i have on it, with a light tap of the pedal the motor revs as if my foot's sunk into the accelerator and prior to the modifications I would need close to a 1/4 pedal depress to get the motor to light up and scream the way it does. My friend has a
02 GT Grand Prix that car has a 3.8 and the past few times we lined our cars up I actually got the better of him and began to pull away..When my motor was bone stock he would have a feild day with me pulling away with ease and since its not been the case and his car is in perfect working order too.

[bszopi]

A new page entry has been added:

[drupal=134]Throttle Body Spacer[/drupal]

Port injection

The TB spacer is meant to keep the throttlebody cooler, by seperating it from the manifold using a phenolic material instead of metal. The misconception is that by adding space behind the TB, you are going to get more torque.


The lowered temperature is fine, and is worthwhile (see TB coolant bypass), but the cost of a spacer and the remaining intake manifold temperature doesn't do a whole lot on its own. The performance myth with this device is that it allows more air in, or that it lengthens the runners, or anything else along these lines.