2009 F-150 5.4L Preliminary Dyno Results!

[Power Hungry]

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.