How to do a stand alone harness out of a factory?

[ronaldcorcoran]

Hello,
I want to do a stand alone harness out of a factory.
What has to be turned off to make it work its a engine dyno so there's know trans and its a 8.1with etc?
Thanks in advance

[Tre-Cool]

generally turn off vats & use a manual based ecu tune.

[ArvillaKovacek]

Disable or ignore signals from the transmission controller so that the ECM does not require input from the transmission.Tiny Fishing (https://tiny-fishing.com)