Gadgetmann

Upgraded to 275/65/20 Toyo AT2's, so my speedo reads 7% low. Does anyone know of tuner options (5 Star?) that also can recalibrate the ECM to fix my speedo?

Would be nice to get a performance/econo tune for my 5.0 (2013) with a speedo recalibrator.

Advice?

BobbyC

iTrader: (1)

The main reason I got an Edge was to recalibrate for the bigger tires. The up side was that it did give a bit more power so it has as much (maybe a bit more) than with stock tires. The guages are also useful so I kept it plugged in (you can unplug after you tune). Had I known this, I would've gone with the larger touch screen model.

RedOctober5

I had the dealer change the final drive ratio on my truck when I went to a bigger tire... $30...

If I remember right there are 6 tire sizes pre loaded to the computer... 315/70/R17 is the largest.

karl contreras

Do you know the sizes that are programmed?

techrep

iTrader: (1)

so...how would that work for his 275/65/20's

BobbyC

iTrader: (1)

Only the available stock size tires for any F150 are preloaded. You need a tuner for specific sizes. I put 275/70-18 tires (33.2") and the Edge made it easy.

RedOctober5

I remembered seeing the 315/70R17 when I had a TSB reflash done.

I didn't take note when I was sitting with the technician when he reflashed the truck for the new tire size..

I remember seeing six or so on his program. I looked specifically at my tire size and said "yup there it is, click that one" and it was done..

RedOctober5

I also remembered him doing some math and I was 500 revolutions over what stock was.. just incase my tire size wasn't there..(I knew it was) so if the tech is savvy he can get it to the closest size..

JLonsinger2011

I did it with my SCT

Heishman

Got these from somewhere on the net.