Do throttle body spacers really work?

[HemiLV]

Waiting for spring I came across an Airaid PowerAid Throttlebody Spacer.

Has anyone tried one of these on a 6.1 Hemi?

Do they provide any benefit or are they just another door stop?

[DCX Depot-Tim C]

While in theory-"yes" they would work.

I have not seen any proof of it.

Plue your TB is metal and you intake manifold is metal, so now real gain to be made from less heat.


I would say dont waste your money on that product.

There are tons of products that actually do help.

[DK-Hemi 09 Challenger R/T]

i was told , by few mechanics , dont waste money , in fact one handed me a peice of paper and said here go install that on your car , that how much differnce it helps, lol , i said ok , i got your point. but thats on a challenger , i got few freinds with trucks , that said they swear an will fight to agruee they see a differnce with a spacer. so the big question is if you feel good putting one do it , if you dont want to then dont , i dont think a spacer will make differnce that you will go wow , beter to just upgrade to 85 mm TB , or do other bolt ons. Enjoy !

[tampa03cobra]

For a motor that is largely built for bottom end torque like a truck motor, especially with big gears, by adding a big tall spacer (basically increasing runner length) you are going to see a difference in torque. While this is usually more noticable on a carb motor, I have seen some 350 based Fuel injected SBC trucks that gained like 14-15 Ft/lbs of torque, but it was because the intake didn't have long enough runners to begin with. With the SRT8, that intake has some serious R&D and since it already has some big runners, you really aren't going to notice a difference, especially in a motor built and camed for that broad of an RPM band.

[Brucer41]

I have seen pro's and con's of this and the one thing that is universal is that it will add a few ft lbs of torque. It wont help Hp that much in the higher power but the claims are in the lower power range you see a difference. I am fence sitting on this until I get a positive response from AirRaid (I asked for dyno proof on a SRT with a 6 speed as proof). I will share if I ever get a response.

[OA-5600]

If the spacer allowed longer fuel-air mixing, I'd say it should be a benefit.

But the throttle body spacer is before the fuel is added.
As far a air flow benefit: the spacer is immediately after the throttle flapper (increased turblence) which is immediately after a 90 degree turn (more turbulence).

Bottom line: If you have an extra hundred and feel guilty setting it on fire, donate it for a throttle body spacer.

[Hemi-Roid]

I'll be honest and say that I did purchase the throttle body spacer from airaid when I got the K&N CAI. Do I notice a difference? Ummm yes and no. Yes I notice a difference in sound and in torque. I can light up the wheels even with the ESP on (not for an extended time). I say no because I haven't put it on the DYNO yet and I can't offically claim which part actually added "what amount" power, the CAI or the spacer.

So to help your decision is it worth your money: if its more than $100 don't buy it. You really won't notice a difference. If you're like me and get a little discount for buying several items at once, pick it up, who cares. To me its like a K&N drop in filter, you pay 50, 60 bucks but it lasts a lifetime and you pick up 1 or 2hp, more in torque, and a lil eye candy.

Happy tuning.