Chevy & GMC Vans

Hope you guys remember me form AS but I am going back to tbi on my carbed V8. Is it possible to us the stock ecm and burn a chip that just controls the tbi not the ignition or egr(non egr manifold and new accel hei distributor too cheap to lose money on these things), I was thinking about going to a megasquirt and puting a tbi on an adapter plate on my 4 barrel manifold that seemed to be the easiest so I wouldn't have to burn new chips (seems like a hassle). Any thoughts or ideas
Catfish

Check with http://www.TBIchips.com He should be able to let you know what can be done. I know he also used to burn custom chips. I have a stage 2 chip in my Van and it runs great.
Rocke