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Airaid PowerAid Throttle Body Spacer Part #400-591 Customer Reviews

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21 Customer Reviews

Not sure

Reviewed by John B (Trimont, MN) Reviewed for a 2002 Ford F-150 — Aug 10, 2014 10:38 AM

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4 of 6 people found the following review helpful.

I installed on a F-150 with 68,000 miles. I was expecting a fuel economy increase. It may have improved performance, but not economy. Still 16 to 16 1/2 MPG very disappointed. I also made a change to my air intake, with a k&M filter. Still little or no improvement. SO now I am looking to change exhaust and install a 12 volt fan. maybe 16+ is then best I can expect.

2002 F-150 KingRanch 5.4L

Reviewed by Joshua S (Bokoshe, OK) Reviewed for a 2002 Ford F-150 — Jul 15, 2011 9:47 AM

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0 of 1 people found the following review helpful.

The sound it makes is awsome and the low end extra power is nice! It was super easy ta install if ya have any common sence.

Pretty Good!

Reviewed by Trey H (Prairieville, LA) Reviewed for a 1999 Ford F-150 — Jun 18, 2009 11:40 PM

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14 of 16 people found the following review helpful.

After installing the spacer on my truck i didnt notice a huge increase in power but there was a slight increase but my gas mileage really boosted!

5.4L Expedition

Reviewed by Joshua W (Albuquerque, NM) Reviewed for a 1998 Ford Expedition — Oct 25, 2007 10:04 AM

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3 of 3 people found the following review helpful.

I have a 98 Ford Exedition with 9" of lift and 37" tires. I have done several things to it to include the Fram Boost Cool Air Intake, Edge Performance Chip, Flowmaster Exhaust, and much more... When I put the Airaid throttle body spacer on I really noticed a difference in the mid-range power and yes I have noticed an increase in mileage. And with 37" tires any increase in mileage is great!!! The sound the whistle makes isn't as loud or as annoying as I thought it was going to be. I kinda wish it was a little louder whistle. But awesome product. Highly recommended!!!

99' F-150 5.4L

Reviewed by Alex W (Jacksonville, FL) Reviewed for a 1999 Ford F150 — Oct 13, 2007 7:50 AM

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well i gotta say it wasnt that bad to install...as long as u got the tools u can do it....well...i notice the whistle it sound like 1/6 of a turbocharger....but same sound like...no noticable power increase or fuel economy...so im not sure what to say....i here the whistle so i know its working maybe i just ride it hard....overall good product would buy again!!

99 f150 poweraid spacer

Reviewed by Jordan S (Soldiers Grove, WI) Reviewed for a 1999 Ford F150 — Jul 23, 2007 9:51 PM

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very easy and fast to put in. has a whisle that i think is cool and you can tell when its working 2700rpm to about 4500 a bit more mid and top end power

Ford F250

Reviewed by Joseph G (Ridgecrest, CA) Reviewed for a 2007 Lincoln Mark LT — Jun 25, 2007 11:35 PM

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1 of 1 people found the following review helpful.

Very nice item... easy to install. and im getting about 2 miles to a gal better on the highway but not much of a change in the city... last it has a nice whistle.. A+++

t.b spacer

Reviewed by damien a (Santa Rosa, CA) Reviewed for a 1999 Ford Expedition — May 03, 2007 5:35 PM

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1 of 1 people found the following review helpful.

Not bad for for the price.I noticed a little improvement in performance and gas mileage.I like the whistle sound,its not that bad.Good buy

Airaid PowerAid

Reviewed by nicholas z (Clovis, NM) Reviewed for a 2002 Ford F150 — Apr 20, 2007 7:02 AM

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0 of 1 people found the following review helpful.

I really didn't notice a whole lot of difference in performance or fuel economy. There was a slight difference but not substatial at all.

03 Expedition

Reviewed by scott l (North Providence, RI) Reviewed for a 2003 Ford Expedition — Apr 10, 2007 7:40 AM

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3 of 4 people found the following review helpful.

Very easy installation, not sure if I can notice any power gains. The whistling is a little annoying, Kinda sounds like a slipping belt.

Airaid PowerAid Throttle Body Spacer - 400-591

Airaid PowerAid
(21)
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