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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Sun, August 14th, 2011, 03:09 PM
redshirt63 redshirt63 is offline
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Join Date: Aug 2011
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Default PHP Gryphon Up grade or change the CAI?

Quote:
Originally Posted by JackandJanet View Post
Hi Redshirt - we won't kick you around.

I wonder, is this "cut out" you describe during acceleration? If so, it's very likely that the rev limiter is set too low and you are in a lower gear. Coming off the gas allows it to shift up and then you don't hit the rev limit (unless you really get on it).

To fix this, reinstall your tow tune and then in the "Custom Options Menu", scroll to "Load Previous Settings", which will reload your current Tire Size, Gear Ratio and other things. Then, scroll to the Rev Limit or Max RPM setting (I've forgotten what it's called), and set it to 5500. Make sure your WOT 1-2, and 2-3 upshifts are about 5000, and set the 3-4 WOT upshift to 4600.

Now, regarding the CAI - we here at PHP don't think much of them, but we can't really say they're all bad. My first recommendation is to replace it with the Gotts Mod version. You can do a search here for information on that.

And, we think you'll appreciate the "refined performance" of custom tunes, but we don't really push those if you don't want to try them. The canned Level 2 tow tune in the Edge is really pretty good for all around performance, so if it works, OK. Some CAIs DO make the engine run lean though (but that does not give the symptoms you describe), and custom tunes can fix that.

Glad you've joined us.

- Jack
Good Morning Jack,

I have to start by saying......YOU ABSOLUTLEY NAILED IT!!!!!!! I reset my generic tow tune on the edge evo and started going thru the recommended changes from you; Max RPM was already set at 5500, WOT 1-2 and 2-3 were already set to 5000, when I got to WOT 3-4 it was set at 4900. I backed it down to 4600 as you sugested and drove from Temecula to San Diego and back yesterday (about 60 miles each way) without a single issue. Looking into the GOTTS mod now.

Thanks again Jack,
Redshirt

Last edited by redshirt63; Sun, August 14th, 2011 at 03:20 PM.
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