who has upgrade there 85 ecm??
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From: va fairfax
Car: 85 camaro z28
Engine: 305
Transmission: auto to manaul
who has upgrade there 85 ecm??
to upgrade my 85 ecm, am i goin to have to change out the 2 relays (and harness wiring) from a Donor '86-'89 TPI Fbody car ? why is this swap so hard? should i just buy a new wiring harness, can anyone help???
Joined: Jul 1999
Posts: 10,950
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: who has upgrade there 85 ecm??
Read the tech articles on this website. There is one on switching an '85 setup to '86-'89 setup.
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