Hi all. Thanks in advanced for any help.

86 Trans am, no mods yet. Will be doing 6E bin, EGR, headers and smog pump delete to start

Over the last month I've been reading and learning about gm obd1 tuning. I have a grasp on it. I've downloaded Tunerpro will donate when I get to actually burning and data logging, currently have no hardware. I've fiddled with a few 6E bins. I'm leaning toward using an APYM bin instead of the ARAP with the extra timing to start out and be safe. I'm confident I've gathered enough info to modify the bin to accommodate my changes.

Now to my question. Is there a definitive definition file I should be using. I've downloaded and checked at least 5 xdfs and every one has a slight difference in the parameters list. The one on here has a flag list that's smaller compared to another, the tables in another seem to be wrong etc.

Second question would be, is there any harm in modifying the bin using multiple 6E xdfs? I've compared a few and the addresses seem to line up.

Any help will be appreciated.