F250/350 vs F450

Is there any difference in the tunes for these trucks? When ordering custom IDP tunes, does a person have to specifically ask for F450 tuning?

not that Im aware of

^x2..the way erics tunes are on the livewire it shouldnt matter im thinking, but im not totally sure

Nope. No difference. You can adjust For the gearing on the live wire anyway... Ain't no thang.

Do you have to adjust for gear ratio and tire size since they are so different from 250's and 350's?

I would think yes, because it would help your shift points.

Not a necessity, the truck will still perform, but its a good idea.

I always set mine, as in I dont leave the tuner on stock for either one.

I did that this morning as well as disabling the EGR to see if that would change anything, and my VGTDC is still WOT (7.001%) cruising down the highway. But that isn't my concern, the truck runs really nice there and EGT's are cool.600-650 on level ground. It's when it just feels like running at 65-75% closed is. EBP is way up there. It does this when it wants. Almost like every now and then it just likes ***king with me. Nothing like having a truck with a sense of humor eh? LOL

New EBP and tube already. EBP and MAP are the same KOEO (13.4psi absolute). So all the sensors check out.

tbsimmons said:

I always set mine, as in I dont leave the tuner on stock for either one.

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Did you happen to check out those pressures this week?

I got called into work and drove the Toyota, I dont drive the dually that often to work.
If I get a chance today I will.