MEFI 5 Burn Instructions
This package includes a MEFI5 Scan Box, a registration key, a USB cable, a vehicle interface cable, a
CD ROM with drivers and engine software, and this instruction sheet....

Which Mefi? Mefi1,2,3,3b,4,4a,4b,5,5a,5b,5c,6,7 etc etc????? Mefi1,2 can't do real-time tuning and have to flash. The rest can be tuned in real-time while engine is running :thumbsup: