SB tpi

[John Hess]

Actually, it is a module (looks like an EPROM and two ASICS on a 
slender PC board.  As far as I know, there are no significant changes 
other than programming the computer to handle the cold start 
enrichment with the normal injectors and not use the cold start 
injector.  You don't HAVE to take the cold start injector out;  though 
most will recommend you disconnect the electrical plug from it.

John


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From:  steve trindade[SMTP:smtjr at mail.utexas.edu]
Sent:  Monday, December 23, 1996 6:27 PM
To:  'diy_efi at coulomb.eng.ohio-state.edu'
Subject:  SB tpi


Jen,
i own an 86 camaro w/ TPI. i am interested in this conversion to the 
89 eprom.  are there any other benefits (read performance 
improvements) as a result of this or is it strictly to simplify the 
system.
when you say EPROM, you do mean just the chip correct? not the entire 
ECM?

Steve Trindade
(SMTJR at mail.utexas.edu)




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From: 	Jennifer Rose[SMTP:javer96 at snowcrest.net]
Sent: 	Monday, December 23, 1996 7:01 AM
To: 	diy_efi at coulomb.eng.ohio-state.edu
Subject: 	RE:SB tpi

Hi Keton



        John's idea is good-recently converted my 86 tpi to an 89 
prom. So
far haven't removed cold start injector-too lazy. Have the plugs,will
complete convertion when the intake gasket and cam are changed.

        Does any one have any suggestion on what king of gaskets to 
use ? My
intake gasket started to weep coolant out on top.

Happy Holdays Vance