Wonder how many guys have seen this?

2009 F-150 Dyno Runs


Bill at PHP did some dyno testing on a 2009 F-150 in the beginning of the year. The numbers are pretty impressive, especially if you are familiar with the prior generation (04-08) HP/TQ curves.So, if Bill can gain ~7 HP/TQ by removing the snorkel section of the airbox...would that work on the Expy as well?


I think so, but I'd like to see what others have to think about this.

 

By snorkel section are you referring to the air silencer that's attached to the airbox itself or the piping from the box to the T-Body?

First thing I did when I had a weekend was to yank out that foolish silencer. Only takes about 20 minutes. As far as power goes, it's nothing you'de ever feel SOTP but it sounds better from 30% throttle on up.

 

yes, I'm talking about that little snorkel section between the airbox and the fender


on a Dyno, the 09 F-150 shows a 7.5 HP gain from removing that thing

 

In either case, I would yank that thing at the first opportunitty regardless. You'll never feel less than 20 or so HP SOTP anyways but like I mentioned in my earliar post, the sound gain from removing the silencer is more than worth the 20 minutes it'll take you to get rid of it. You don't need a special tool to remove the silencer. A few basic wrenches and a couplea screwdrivers will have it out in under 30 minutes. A dyno *might* show some gains from removing it but the sound difference is really the pat-on-the-back. Anything over 20-30% throttle will deliver a nicer sounding "gddyup" for your troubles. We all know it's not *always* about the power. It has to sound good to you too.....

I'm all stock right now, minus the air silencer. I still have the factory air filter in place! My next step is going to be an X3 from 5-Star and then a Magnaflow, but for now, just that simple mod makes me smile.

 

I wouldn't bother with a CAI. At moderate speeds, the IAT (intake air temperature) matches the AAT (ambient air temperature). This is according to my Dashawk OBD display.