ECM question
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
ECM question
I have an ECM from an 87 305 TPI firebird, from what i gather, the posibilty of VATS in it is hit or miss? if i have VATS in it, all id need is a prom from an 87 305 TPI camaro right?
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: ECM question
The VATS is not in the ECM itself, but its a setting in the PROM that plugs into the ECM, as well as a separate black box that reads the resistor in the key when you put it into the ignition. GM didnt start using it in f-bodies until late in 1988, and then in all f-bodies in 1989 and newer.
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