So I have had my edge on my 2001 4x4 5.4 supercrew since the end of summer with no problems. However, i just recently tried to adjust the tire size for my oversize 325/60/r18 and when i went into create custom tune and went into tire size adjuster it emmediately said this option is nmot available for this vehicle...wtf it is advertised on the box and on the website to do this option...also i have updated a few times....same results.....anyone know what to do? has this happened to anyone else? what should i do?

 

I know how you feel , nothing is mentioned about it not being capatable with certain years, I have a 98 and no tire size or gear ratio's can be changed, so when I put the 4.56's with 35's I'm of about 5mph at 65 mph, I bought mine for the same reason, I was so disappointed, but got over it , the truck runs bitchen with the edge... It's my $300 shift kit...

 

So... the 97-03 guys are screwed?... I haven't tried to change any of that yet....

 

That's odd, I thought only up to 98' model years did not have certain PID's available. I have a 02' Screw with 285/75R-17 tires and was able to program the correct tire diameter of 2551mm with 3:55 gear ratio on my Edge. My speedometer is dead on, only off by a tenth of a mile after 100 miles of driving.

Can dealer reflash your pcm to get available PID's to come up?

 

I can change the gear size, but it just wont let me change the tire size for whatever reason. And if i have the stock 3.55 gears and im now running 325/60/r18's is is safer/better for me to put in 3.55 into my edge, even though it will still think i have stock tires? messing with gears makes me nervous...what should i do?

 

How current is youe Edge software & calibration code ?

 

i just updated it this week, and im not sure on the calibration code

 

If you can't change the tire diameter but can change the gear ratio, you will be able to program a higher ratio to trick the pcm to calibrate the speedometer to compensate for the larger tires.

Example: If current ratio is 3.55, try programming to 4.10 to get the speedometer/odometer to clock faster to the actual speed. This will be a trial-an-error function that will take time to achieve the correct ratio just as it was for me to achieve correct tire diameter.

If you have a GPS, you can do it a little quicker than observing mile markers on the highway and then make the adjustments to the gear ratio as needed.

Example: If a 4.10 ratio is causing the speedometer to clock to fast, try reducing that ratio to 4.08, 4.05, 3.92, etc. etc.

Again, this will be trial-an-error programming until you find the correct ratio to match actual speed.

 

but wont thaqt have any effect on my RPMs and performance? if the computer thinks i am running different gears but im not. Can that have any damaging effects?

 

No, it will not have any affect whatsoever on your performance and rpm. All it will do is adjust your speedometer and odometer to match your new gear ratio that you program into it. That's the beauty of Ford pickups and all the PID's that can be adjusted in the PCM by the end user.

 

I had the same issue, but I just unplugged it for about 10 min and plugged it back in and I was able to change it. Hmmmm call EDGE