Yeah my mph is off about 3mph slow I know that's going effect it some I started to send it to php before when I first put it on

 

The your MPH is probably off 5 MPH as the dash display is usualy 2-3 MPH fast at 65 MPH.

 

What is this grypon going to do and custum tunes

 

I agree with all advice given by Shotzgun (and commend his patience)...with the exception of that statement given a caveat. My research shows that the onboard MPG computer is spot on to within a 1/10 MPG as long as you reset it EVERY TIME you refuel. I was surprised too, but the numbers don't lie

The reason is obvious; people calculate their mileage by hand at each fill-up. Therefore the computer needs to do the same. Most never reset that puppy so it shows the average across multiple tanks.

https://www.ford-trucks.com/forums/6...ml#post4935662

Second paragraph in the results section.

 

"loss of backpressure" Come on now! The only time an engine is sensitive to backpressure is on a 2 cycle engine, hence the expansion chamber tube before the muffler on your dirtbike or snowmobile.
If backpressure gave you more hp or better efficiency, wouldn't we be seeing mufflers on top-fuel drag cars by now?
Am I wrong on this? I see people jumping to conclusions on backpressure all the time being the reason for lost power/mileage/responsiveness, ect... Anyway, hope you get your programmer set right for your truck dude!

 

Bridge -
I tried the reset each time method and I didn't see any change in the error.

Not saying you're wrong, just saying that each truck seems to be different. Based on what I've read (and my own personal experience) the 09-10s are consistently 6-1.5 MPG high regardless of how often people reset the AVG MPG.

Stacey -
If you are not able to research and understand what the Edge or Gryphon will do to your truck's engine and PCM, I strongly suggest you leave it stock. Uninformed user adjustments can get very expensive and usually lead to "XXXX product screwed up my truck's YYYY" threads.

There is a ton of information available on this forum (and other truck forums), PHP's forum, but you have to be willing to research, read, and then ask specific questions about each product (otherwise you'll get personal opinions, not facts).

As examples:
Have you even been to PHP's website? Have you called them? Have you sent them a PM or e-mail? Have you called Edge's tech support or sent them an e-mail? Have you read (cover-to-cover) the Edge manual? Have you downloaded the Gryphon manual?

In short, I'll try to carry you but you're going to have to pick up your feet.

 

Yes I talked to the techs at edge they just told me that's it just didn't sound rite that I loss mpg like that I'm going to do some more research on a few more things I have talked to several peaple about the csi they said that it wasn't going to hert my motor at all but what u guys are telling me makes me have douts I'm on my phone I'm limited to a few web sites when I get home I'm going to do some research on the gryphon and some more things

 

This thread will help you with the Evo to Gryphon upgrade.

So will this FAQ.

You may not have lost any MPG. If your gear ratio and tire size are wrong in the Edge, then the dash readout and hand calculations will also be wrong (as your odometer isn't correct).

The 04-05 (and some early 06s) 5.4L 3V motors came with lean factory calibrations. Depending on the A/M intake, your MAF may not be correctly metering/reporting the actual air flow (slot style MAF) due to changes in the intake tube geometery at the MAF. Properly written custom tunes will account for A/M intakes and will change the MAF transfer function allowing the PCM to correctly adjust the fuel (and ultimately maintain the proper A/F ratio).

In fact, most experienced and reputable custom tuners will recommend custom tunes for ANY 5.4L 3V motor when adding an A/M intake.

Messing with your truck's PCM calibration is no small task and should not be taken lightly. Plug and play is great until you start plugging and playing incompatible modifications.

 

It's not the back pressure that effects the performance of these trucks so much as it effects the sensors and electronics. Generally speaking, lower back pressure on a 4 stroke engine is a good thing. But when you have a computer controlled engine, and the electronics are as sensitive as these newer vehicles, losing back pressure can effect the readings to the computer, causing the engine to run differently. That's why shotgunz was mentioning the CEL if the cats were gutted. With no cats, the O2 sensors don't see a reduction in particulates and the comp will try to compensate to far thinking the cats aren't working and the engine will start losing power. Some have had similar results with aftermarket high flow cats and no adjustments to the programming. It's not really lack of back pressure that is the issue, but how the computer sees it.

 

I haven't changed the gear it still has 373

 

I do agree with you here. I guess what I was trying to get through was the backpressure lost with an exhaust upgrade (with no catalytic converter alteration) should have no negative affects on performance or mileage. I would never mess with the cats for fear of the sensor nightmares you mentioned above. Unless one or both were clogged or shot, I might try a high-flow pair, but other than that I don't touch them on any of my vehicles, past and present. I'm all about the cat-back exhaust and intake, and let the computer take care of the rest.

 

But what is the value in the Edge?

 

The value is 373

 

And is your rear gear really a 3.73?

What about tire size in the Edge? Does it match your tires?

 

Yeah the truck has 373 gears the edge don't have the correct tire size but I still have stock size tires on it but something just happend I'm in my truck with the key in the cut holder and the radio come on and the computer just reset by it's self I don't know what happend there any idea