Quote:
Originally Posted by -=Jeff=-
The MAIN difference is the Knock Sensor stuff. on the 1990 the is an external module for the knock sensor, in 1991 it is that PC board on the MEMCAL (PC board is over the 2 smaller ICs) and is not present on the 1990 MEMCAL.
ALSO:
Power Switch is connected to a different location C9 on 1990 and C18 for 1991 and later
Injectors 5 and 7 are swapped from 1990 to 1991 and later
I need to double check the Injectors in my red book to be sure, but that is the data I have..
Now, you could take some of the table data out of the 1991 Binary and transplant them in a 1990 Binary..
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So, Jeff, you are saying a top notch tuner can make changes to the 90 prom to work with a 91 ? Maybe too much trouble ??