i seen something on the net about a bugged 1986 305 tpi prom
06-11-2003, 10:38 AM
#3
I felt a disturbance in the Force - that you were seeking me...
Yes, there was a TSB on faulty programming on all 1986 TPIs. The MAF tables and O² tables were written so "tight" that they were intolerant of normal system variations, setting inadvertent SES lamps and DTCs. Also,TCC lockup points and target idle was inappropriate for the car, and those were adjusted in the factory upgrade PROMs' programming.
Yes, there was a TSB on faulty programming on all 1986 TPIs. The MAF tables and O² tables were written so "tight" that they were intolerant of normal system variations, setting inadvertent SES lamps and DTCs. Also,TCC lockup points and target idle was inappropriate for the car, and those were adjusted in the factory upgrade PROMs' programming.
06-11-2003, 03:05 PM
#4
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vader
i have the stock chip in my hands here
i will read you the numbers on it
delco aum 8993
16055376 2 8612
on the side of the chip it has this number 16035006 8617
all i want to no if this chip is bugged if so i will order the good one tomorro
thanks
i have the stock chip in my hands here
i will read you the numbers on it
delco aum 8993
16055376 2 8612
on the side of the chip it has this number 16035006 8617
all i want to no if this chip is bugged if so i will order the good one tomorro
thanks
06-12-2003, 04:19 PM
#5
Mikobu,
This is a "bugged" factory PROM:
You have exactly the same OEM that I did. You'll definitely notice a performance difference, if for nothing else than the improved TCC control and spark advance.
This is a "bugged" factory PROM:
You have exactly the same OEM that I did. You'll definitely notice a performance difference, if for nothing else than the improved TCC control and spark advance.
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