0411 ecm upgrade
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Joined: Aug 2021
Posts: 75
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Car: 89 GTA
Engine: 350
Transmission: auto
Axle/Gears: 3.23 BW 9 bolt
0411 ecm upgrade
For those that have done the 0411 ecm upgrade on a tpi motor, did you use an aftermarket standalone harness from efi connections or psi conversion? Also how easy is it to tune or where is a good place to send the 0411 ecm to have it tuned? I have no experience with tuning.
Yes I know about the Holley terminator x system but I would like to keep the ses light and be able to pull codes with my scanner.
Yes I know about the Holley terminator x system but I would like to keep the ses light and be able to pull codes with my scanner.
Joined: Sep 2005
Posts: 871
Likes: 4
From: Yreka, in the State of Jefferson
Car: 1991 red Z/28
Engine: 350 TPI
Transmission: T5 swap
Axle/Gears: 3.42
Re: 0411 ecm upgrade
For those that have done the 0411 ecm upgrade on a tpi motor, did you use an aftermarket standalone harness from efi connections or psi conversion? Also how easy is it to tune or where is a good place to send the 0411 ecm to have it tuned? I have no experience with tuning.
Yes I know about the Holley terminator x system but I would like to keep the ses light and be able to pull codes with my scanner.
Yes I know about the Holley terminator x system but I would like to keep the ses light and be able to pull codes with my scanner.
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