Tbi to tpi swap
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Junior Member
Joined: Jul 2011
Posts: 10
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From: French Camp NorCal
Car: 91 RS vert
Engine: 305 tbi soon to be tpi
Transmission: 5 speed manual
Axle/Gears: IDK
Tbi to tpi swap
I have a 88 iroc tpi assembly and harness coming from an automatic. I have a 91 RS but manual trans. My question is what ECM will I need to make it all work the first time? And will there have to be any mojor changes to the automatic harness?? Thanks
Any and all help is appreciated
-Marco
Any and all help is appreciated
-Marco
Joined: Mar 2000
Posts: 5,703
Likes: 132
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: Tbi to tpi swap
Do not try to use an '88 harness on a '91, they do not match at the bulk head.
Try to get a '90-'92 harness and computer your sustem will work with it by leaving off the 9th injector.
Try to get a '90-'92 harness and computer your sustem will work with it by leaving off the 9th injector.
Thread Starter
Junior Member
Joined: Jul 2011
Posts: 10
Likes: 0
From: French Camp NorCal
Car: 91 RS vert
Engine: 305 tbi soon to be tpi
Transmission: 5 speed manual
Axle/Gears: IDK
Re: Tbi to tpi swap
Going to pick n pull today to see if they have what I need.
Thanks
-Marco
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