Yea I own an LBZ but honestly don't know how EFILive works at all. Is it just plug and play like my edge?
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pretty much a plug and play deal, you plug into the OBD2 port to power the tuning box and access the ECM, make a few selections on the box to open a file and then you make a selection to pull the GM tune and load your performance tune...first time takes about 15min, to pull and load, after that, you can just flash over the existing file and it takes about 7-8min. some tuners require you to pull the tune first and email it them first, some don't, nothing about the process is difficult
the only mod I would say you "need" is a lift pump with a dual filter set up
and I personally would get and install a transgo jr shift kit, or see if Mike L sells a variant of such a kit, just to get the shifts to firm up, increase line pressure and "help to" keep your trans functional with the added power.
For most of us, It's kinda like an effort to prolong failure from happening and experience a crisper shift until the trans fails
