First of all, thanks everyone for being so cool and helpful! So I guess I did my project backwards. As an oldschool car guy I built the motor for my 1999 c2500 Suburban first and then hoped it would run on it's original "black box" ECU. The engine is a 496 stroker BBC With custom intake and heads. OEM injectors on a not so OEM fuel system. Anyhow, It looks like my best bet for this thing is to do the Ol' 0411 swap. I already PM'd Lextech, but would love any help that can be offered with a base tune or at least a starting point for one. I am on overload with all the data that is here and it seems that there is little about this particular build of mine. At least I can't seem to find it when searching the forum. I ordered and received a GT dongle from OBDXpro last week and hope to use PCMhammer and Tuner pro for this tuning. Thanks in advance for any help you can send my way.
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