Airaid 400-531 PowerAid Red Anodized Aluminum Throttle Body Spacer Review

2005 5.4 Ford F150 Super Crew 2WD 66" bed K&N Air Filter.
After 4 fill ups I'm averaging about 17.5 MPG (60% Highway 40% City driving).
I had one 19.7 MPG reading but that was probably a fluke.
I would recommend you remove the rubber tail piece of the stock ford air intake if
you have the style that goes into the wheel well.I just added the modular intake
tube Airaid 400-940 to see if that adds any more MPGs.This was really easy to put
on and even though the stock bolts may look like they will work go with the longer
ones in the kit.
5 Apr 10 Update.
I put on new General Grabber HT tires filled with nitrogen and added a Tanneau
cover. I got another 19.5 MPG fill up so I think this will be the new standard.

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Product Description:
The Airaid PowerAid Throttle Body Spacer is developed to enhance off-idle torque, from 800 RPM to approximately 3,000 RPM. It incorporates a patented helix bore, which causes a spinning action of the incoming air-charge as it passes through the throttle body spacer. This improved air-charge carries all the way into the combustion chamber, producing a super-atomized mixture, which produces tremendous gains in mid-range power and overall combustion efficiency for better fuel economy.

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