I got to tune a MEFI 3 today, 540ci Chevy for Fast Fred's Engines here in Lake Havasu. It had a whipple supercharger 7.8psi and a MEFI 3 ECU. We were able to make 1001hp at 5500 rpms and 1014 ft lb tq at 4500 rpms on 93 pump gas. It made some good power!! Made me think about putting one of these in a street car, Wow!!
Testing was done on a Super Flow 901 at Pro Marine in Lake Havasu. Here is a pic, Fred is going to get me a pic of the print of the dyno sheet.