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91 Formula TBI T5 swap to 89 MAF TPI T5

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Old Apr 13, 2011 | 06:30 AM
  #1  
zroc's Avatar
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From: way over there
Car: 87 IROC
Engine: LB9 for the moment
Transmission: T5
91 Formula TBI T5 swap to 89 MAF TPI T5

Ive been out of the game for a bit...

I have the 91 Formula TBI Body (no engine/trans) and I have a donor 89 TA T5 TPI car...

looking for info on harness compatability and if any wiring harness mods need to be made...

Also an issues with VATS system and how those might be addressed

any other heads up things to look for???

Also any online wiring diagrams for the 91 TBI car and 89 MAF TPI car...

any help is appreciated... if I need to ask in another section let me know and will repost there...

thanx in advance

Z
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Old Apr 15, 2011 | 06:09 AM
  #2  
zroc's Avatar
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Joined: Oct 2000
Posts: 223
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From: way over there
Car: 87 IROC
Engine: LB9 for the moment
Transmission: T5
Re: 91 Formula TBI T5 swap to 89 MAF TPI T5

dug up my firechicken manual...

and read a bit on search... some conflicting facts... on wiring... 89 MAF system seams quite feasable...

need verification on C100 and C207 which I cant find in my manuals wiring diagram... no idea on the location of these.... possibly the bulkhead connector???

further... if the 91 bulkhead connector should be used and seperate the loom wrap and wire colors to look for...

again the first post asks for additional heads up... Im concerned with vats operation with the swap...

if she still had the TBI it came with Id use it...

Im really short on $$$ and I need my wheels...

again... thanx in advance...
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Old Apr 15, 2011 | 07:34 AM
  #3  
1ADan's Avatar
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: 91 Formula TBI T5 swap to 89 MAF TPI T5

c100 is the connector on the driver side firewall (near brake booster); c207 is on the passenger side under the dash.

there are a lot (but not every) of good wiring diagrams here:
http://www.austinthirdgen.org/index.php?pid=19
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