prom tuning help

[ECMnut at aol.com]

Hi Nolan,
the AXKW  comes up as a 1991 5.0 liter VIN "E".
It sounds like ya need the 5.7 Liter PROM as a starting point.  
I assume thisis a TBI system(?)  If so, does anyone know if the 
TBI units differ between 5.0 & 5.7 engines for the 91 F-body?
Next, the 8746 ECM was found in:
 90 Cadillac 5.7
 89-92 5.0 Camaro/Firebird
 89-90 5.7  Camaro/Firebird 
HTH
Mike V

> A friend of mine has a 1990 firebird that was originaly a 305 tbi.
>  Now it has a 350 with a ZZ3 cam. He is trying to sell the car 
>  but it idles like crap