2009 F-150 5.4L Preliminary Dyno Results! - Page 3

***Power Hungry*** · #21 Thu, January 29th, 2009, 02:35 PM

Correct, Jack.

As long as the relationship between the MAF sensor and the intake tube is not disturbed, the MAF sensor *should* correctly calculate the amount of air entering the engine. Of course, this is under N/A draw-thru conditions. The ram-air effect of the snorkel on AO's truck may have a slight effect on AFR, but based on other ram-air kits I've seen in the past, the effect is not enough to be concerned about.

This coincides with what we've seen on the dyno with a 60 MPH fan blowing directly into the engine compartment. There is occasionally a slight AFR shift (.1 - .2) with air blowing into the intake tube (with snorkel and bellows removed) but think that this may be more related to the turbulent conditions cause by the high speed fan and not necessarily because of the removal of the snorkel itself.

Hope this helps.

AgentOrange · #22 Thu, January 29th, 2009, 03:27 PM

Thanks guys!

I didn't want to hurt the motor before I'm able to enjoy the benefits of a Gryphon.

secondarychaos · #23 Mon, February 2nd, 2009, 03:06 PM

Bill- with the turbulence in the intake you speak of, is it going richer or leaner?

***Power Hungry*** · #24 Mon, February 2nd, 2009, 08:19 PM

It could go either way, actually. It depends on how the air density is affected and whether the air flowing through the sample tube of the MAF Sensor is more or less dense than the air going around it.

Obviously, the closer the MAF sensor is to the opening the worse the effect of turbulence will be in regards to sensor fluctuations. The farther downstream, the more chance the air has to stabilize and the less likely there will be inaccurate readings.

68galxl · #25 Mon, February 2nd, 2009, 08:58 PM

where is the snorkel on the 09? there is a air box mounted on the inner fender wall. its not like the 05 I had

***Power Hungry*** · #26 Mon, February 2nd, 2009, 09:02 PM

The snorkel is attached to the airbox itself.

Remove the top of the airbox and the the filter. There are two 13mm bolts that hold the airbox in. Remove them. "Pop" the airbox up and pull away from the fender. The snorkel will come out with the airbox.

The whole thing takes about 5 minutes.

68galxl · #27 Thu, February 5th, 2009, 09:58 PM

thanks for the info

Tylus · #28 Fri, May 15th, 2009, 05:24 AM

Quote:

Originally Posted by Power Hungry

The snorkel is attached to the airbox itself.

Remove the top of the airbox and the the filter. There are two 13mm bolts that hold the airbox in. Remove them. "Pop" the airbox up and pull away from the fender. The snorkel will come out with the airbox.

The whole thing takes about 5 minutes.

sorry to revive an old thread...but I'm curious

I have a 2008 Epxy EL with 5.4 3v

From what I can tell, my Expy is almost 100% identical to the 09 F-150. The only obvious difference physically seems to be the radiator shroud.

I know the tuning is different since I have the 300 HP version, and they have the 310 HP version.

but since I have the same airbox...would I possibly see the gains you've posted if I remove my Snorkel? 7 HP for nothing would be awesome...and I'd love to see if it's possible

btw, any update if the Gryphon will be available for the 07+ Expy anytime soon?...or ever?

***Jackpine*** · #29 Fri, May 15th, 2009, 10:53 AM

Sounds to me like you can. Really, as long as you don't remove anything that looks like it DOES something (i.e., you remove nothing more than a tube), there shouldn't be any problem at all.

- Jack

ticopowell · #30 Tue, August 31st, 2010, 02:52 AM

So I assume that fairly close to these same results will be expected from a 2010?