I am always leary of claims of better power with simple add on's. My original MAS was giving an error code. The dealer wanted more for a replacement than AA did for an upgrade. So I got the upgrade. WOW, I actually see a difference. More on the low end (I pull trailers), and smoother running. MPG has not changed, but I got it for power not MPG. I'm happy with purchase.
06 Ford Exped Taylor Cable Helix Power Tower Throttle BodySpacer
Install:Start/Finish= 2hrs. Buy Mass Air Flow sensor spray cleaner(TEFLON SAFE;) to clean Throttle Body(DON'T USE CARB SPRAY CLEANER),vacuum dirt intake,throttle body loose(4 bolts).Extreme Warning: Don't get your finger(s)between the Throttle Body Plate and throttle body due to Servo electrically hooked up can close shut and cut off fingers: See www.youtube.com see Ford videos. I left TPS & Throttle body Servo connectors on(don't want recal Servo). HP/TQ/mileage= 2 wks driving. BE SAFE&CLEAN