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Mods to '85 GM TPI ECM
Hi, my name is Jim Brady and I just joined the list a few moments ago. My
current project is my '87 Monte SS. My Monte is equipped with the GM
TPI(Tuned Port Injection) system consists of an '85 computer(I assume I have
an '85 computer because it had a Bosch MAF burn-off box attached to it) with
'87 hardware. My original motor was a 305 and the system worked perfect.
My new setup is a 383(stroked 350) with a T56 manual trans. The only
changes I have made to the system since I upgraded from the 305 to the 383
is 24lb/hr injectors and a fuel pressure regulator. Everything works great
except full throttle. I understand full throttle switches the ECM to open
loop mode leaving the EPROM to feed the system pre-determined values. Aside
from improving my full throttle condition I would like to monitor the
parameters of the running motor. What do I need to approach this project?
I assume an EPROM burner, cable for the aldl connector and software. What
can I manipulate with the software? How about the EPROM. I am new to this
and would appreciate any help you can give on this matter. Thanks.
Jim Brady
'87 Monte SS 383 TPI 6 speed