Newbie-intro

[John Hess]

You might find out that the engine won't run at all!  Your '86 
(assuming you are using all the original stuff off it) is a MAF 
engine, while the '91 is MAP.  The best option would be to assemble 
the package WITHOUT the cold start enrichment injector and use the '89 
PROM.


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From:  jforbes at primenet.com[SMTP:jforbes at primenet.com]
Sent:  Tuesday, January 07, 1997 12:47 PM
To:  DIY_EFI at coulomb.eng.ohio-state.edu
Subject:  Newbie-intro

Howdy, all!

I just joined this list, after reading a post from John Gwynne on one 
of the
ngs.

I dont have a lot of EFI experience, just enough to get me in trouble 
   :)
but I'm in the middle of a TPI swap into a 69 Vette.  The engine is an 
86
iron head, with a 7730 computer, which will be wired like and 
initially use
the PROM for a 91 Firebird 350 VIN 8 engine.  I have all the plumbing 
in
place, just have to mount the ECM and harness and see what happens. 
 Been
too busy working on the house, and playing with my new used lathe,
though...and its kind of cool out in the shop.  In other words, I 
been
procrastinatin'.

Does anyone want to lay odds on how far off the PROM will be, if an
aftermarket performance PROM would be better, or whatever?  The car is 
a 4
speed manual, and the PROM is for an overdrive automatic.  I am 
installing a
speed sensor, and I already made a VATs signal generator.  What other
surprises will I have?

Also, I dont have an EGR solenoid figured out all the way.  The engine 
was
kind of what was lefover after a guy put a used 90 Vette motor into 
his 86
Vette, the harness had just the engine end connectors, and not all of 
them.
For the computer end of the harness, I got a 93 Sunbird V-6 harness 
from a
junkyard for $50 (cut off somewhere in the middle), and am splicing on 
all
the 90 Vette engine end connectors, using the 91 Firebird shop manual 
as a
go-by.  The EGR solenoid was missing from the engine-but, as I realize 
all
the EGR valves and solenoids and PROMS are calibrated to work 
together,
where should I start to get a workable system, at the dealer buying 
91
Firebird parts?

Any comments, ideas, flames welcome    :)

Jim
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Jim and Janet Forbes                          jforbes at primenet.com
Sierra Vista, AZ             URL= http://www.primenet.com/~jforbes
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