So, I've been having trouble doing a standalone tune on a 2008 LMM. Is it even possible with the standard tuning software, or do you need to have some kind of additional patch download or something?

The only thing I did so far is disable the security sytem by setting it to none. Should that be enough as far as the programming is concerned? Or does it require something else to disable the interlocking that the system has with the BCM and other modules?

I already have the ecu wiring harness reworked, so that I just have a constant hot, and then a switch for the ignition power to the ecu. Then I have a separate switch to engage the starter motor. Any help would be much appreciated, I've been doing alot of research, but I haven't found any definitive ansers.