90 lumina 3.1 auto-if i unplug the ecm what hap?

[no_doz]

in my car-if i outright remove my ecm-what all will stop working? i realize that fuel/spark will be gone-but what else would i be losing out on?

i ask because i want to get and install a megasquirt 2 system.

[SappySE107]

I dare you to post another thread. I double dog dare you.