So I've been dealing with AFI, the first ECU they sent me for my LNF was programmed for the LEA. Barely ran at all. I'm getting tired of waiting for them to return my ECU with the right OS in it. I paid them money specifically so I didn't have to mess with all this to get the race car running.

Is it possible to use HPTuners to load the right stuff on a used E39 ECU? I have a .hpt from a stock 2012 Regal GS. However, I noticed the axis on many of the tables are different. I assume that is updated/changed with the OS version. Do I need a fresh ECU to get the right stuff loaded?

I've got the MAF and TIAP sensor from the Buick coming and already have the MAP sensor (just need to make it fit the larger LNF manifold hole). It looks like I need to change over to the Buick O2 as well.