throttle body spacer 4.7L

[goblin42]

has anyone used/noticed any actual benefit to a throttle body spacer?

 

[ZakkBaker]

I researched this a while back and what I got from it is that its not really a useful mod. Doesn't do much, if anything, was the consensus. I'm also curious though to hear from someone who actually has/had one.

 

[HemiBabe]

I think from past threads that they're only good if you're going to be using nitrous

 

[JohnHenry]

Have had one, and can't say anything for HP, haven't got to a dyno with and without to clarify. I may be removing my completely soon. Way to much hype on the producers web-site, when I asked for proof, they emailed me some dyno pulls of completely different year,make, and models.

 

[badblackram06]

They only work on tbi or carbed engines where fuel and air enter before the TB spacer. It's supposed to atomize the fuel and air before it enters the cylinder but with the fuel coming in at the heads on newer engines the spacer has no benefit. Only a whistle that becomes annoying after awhile.

I pulled mine off after seeing no improvement in power or fuel mileage. The whistle was cool at first then got super old especially at cruising speeds.