Troublecode 51 from ECM at 1980 Firebird

[Alex.H]

Hello steveo,

thank you for answer!
How sure i can be, the PROM 1337AL is the right for my car?

[Alex.H]

Hello all,

i have find a used GM ECM with prom from a 80th. corvette. The engine ligt is off, the gas mileage sunks from 20L. to 15L. / 100Km. Now i have a little bit problems with cold start and speed up at 50 - 60Mls, but i'm sure, these failures i will be eliminate the next time.

Thank you for help!

Alex