using CTS2 with GDP

[GMClb7kyle]

How do I switch the DSP parameters from Hard Wire to Serial?

[karstd]

I have the same question. when I do switch them do I need to re-flash the truck to make it work. I'm new to this and trying to get it figured out is frustrating. if someone could walk me through what to do it would be greatly appreciated

[Mitco39]

The switch is done in the tune, which means whoever sent you the tune would have to set it that way and then flash the truck with it.