I am familiar with the VE/Spark tuning bits, just not familiar with a lot of the terminology. Like the displacement not being a static; I'd not expect it to be a whole 16 bit table.
Main reason for the EGR delete is because I need to work out the plumbing, not because I don't want it. How similar is the tuning between ECUs? For instance, could the spark and VE tables from a stock 3500 ECU be entered, probably one cell at a time? This assumes that both the MAP and RPM axis are in the same locations and set the same intervals.
I'm running a 3.4L pushrod with 3500 heads/lower/upper and since the upper is just so nice and flat, I will be cutting the top off, cleaning the plenum area out, and fitting an M62 from a Nissan Frontier or Mercedes Kompressor-both cases are a better fit than the GM offerings. The blower will come later, no big deal because the top of the plenum just pops off. Easy to just pick up another top at the parts yard for 10$.
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