... at least according to the manufacturer:

I sent the following email to the folks at AirAid:

Can you tell me – in a nutshell- what benefits there are to installing the Poweraid spacer on my 07 JK Wrangler? I understand – to a degree – its potential benefits to carbureted engines, but how does it benefit a fuel-injected one?


Thanks in advance for the info.


They responded:

Thank you for your inquiry. The throttle body spacer creates some turbulence in the air entering the intake manifold. The fuel injector sprays in the intake manifold on to the intake valve. Once the injector sprays, the turbulent air helps atomize the air and fuel as it enters the combustion chamber. The well atomized air and fuel creates a better combustion for more power. The spacers also speed up the air in the intake manifold which also helps the process. If you have any further questions please contact me. Thank you



Ryan

Airaid Filter Company


I know this has been discussed here a few times. I just wanted to give you the explanation I was given.


(And as a new guy here, I appreciate the info shared and the way you guys look out for each other)

 

I got mine for free when I picked up my AIRAID CAI. It will give you a whistle when you drive it. I haven't looked, lately, but at the time not even AIRAId would give a clue as to what increase you may get. So, it's a nice theory, but in my experience it's worthless.

I've removed both since. (More for my Offroading Pref)

 

Sounds like marketing speak to me. What the heck is atomized air?

 

I didn't get my spacer for free, and - based on what I have read on several threads here - I am going to send it back. Who wants that whistle?

I'll install the Airaid CAI, though.

 

I got the spacer for free and installed with intake, so I cannot tell how much the spacer alone can do, but no whistle for me

 

50 bucks is what it is worth

have one and not really blown away by it just looks pretty in the engine compartment

 

^ Does yours whistle?

 

It's what comes out of the flux capacitor...

 

What is it worth?? probably a really fancy paper weight. Dont waste your money. Even if it did provide some gains its probably around 1-2hp and that doesnt mean crap. I would understand its gains on a carb b/c your injecting fuel directly where the intake is and better mixture is key. But in a FI engine and the location of the spacer that swirled is gonna stop once it hits the intake manifold.

Just my 2 cents

 

sounds like a little bit of BS... I think the only advantage of the spacer would be that it would expand the mix chamber, thus giving a higher vacuum due to the compression of the engine, meaning more air will be sucked in due to the higher pressure and that will tell the mass air flow sensor that more air is coming in which will tell the ECU to add more fuel, thus giving more power. Now, when you have more power at the same RPMS, you "should" go easier on the engine. you won't have to shift when going up a moderate hill since the engine now has enough power (going from 2000RPMs to 2300RPMs to climb a hill is better then downshifting and doing 3000RPMs), or you won't have to press the accelerator so hard in order to pass a car, etc. that more power will mean less RPM's for what you think is a stock feeling and that means less work for the engine, meaning less fuel is burned per mile, and now you have more power and better fuel economy.

So the truth is... the more power per RPM is so that the engine can use less fuel with the same results as a stock and same transmission and gears.


That’s all provided that you don't go "hey more power, whoo hoo!" and stomp the gas pedal all the time.