I have a 67 Corvette with a EFI 502, I 've run this engine for the last 6 years with the MEFI3 with a generic program. Its run well enough to put 30K on the odometer but now its time to do a little tuning. I bought OBD Dianostics MEFIBurn software and had the locked ECU erased and a new baseline program installed. The engine runs better but I know it can do much better. I hope to learn from you guys and exchange info when I get up to speed. I know that alot of the GM EFI crate engines use this type of controller and guys have installed these in everything from hotrods to boats, so I'm hopeing some of you on this site are well versed in this system.
Looking forward to networking with you

Russ