lb7 pto switch sends idle to redline after flash

[MATCO21]

I have installed a pto switch to my ecm to use the cruise control switch to elevate idle in cold temps to keep the truck warm. after I reflashed my ecm to compensate for change in gear ratio, when I use the pto switch the engine hits the rev limiter until I turn it off. I checked the pto setting in my flash and it is set to 2200 rpm. What am I missing? by the way the only thing I changed is the gear ratio and speedometer pulses. Has anyone know anything about this?

[ChipsByAl]

If you put the stock/previous tune in it, does it do the same thing?
Al

[MATCO21]

No if reload the stock tune it works fine.

[MATCO21]

Really no answers?

[THEFERMANATOR]

What year truck and is the modded tune your flashing in a different OS than your stock one or is it your stock one modded?

[MATCO21]

2004, no OS change. just speedo.
Has anyone used a PTO on a LB7 with efilive?