Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

ECU Upgrade question??

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Old Dec 23, 2008 | 05:40 PM
  #1  
AngryChimp's Avatar
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Joined: Nov 2008
Posts: 8
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From: VA Beach, VA
Car: 91 Camaro RS
Engine: 305 bored 40 over, Built For Auto X
Transmission: 700r4, swapping to a T-5
Axle/Gears: 2.73
ECU Upgrade question??

OK I'm swapping my trans(700r4-t5) When ordering an ECU upgrade through JET it asks if its auto or stick. My Question is, since my ECU was made for an auto, would I have to get the JET for a manual or an auto. Maybe a dumb question. I'm just wondering cause I would think that computer wouldn't see the signal from an auto trans.
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Old Dec 25, 2008 | 06:45 PM
  #2  
Fullsizewagon's Avatar
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Joined: Jul 2006
Posts: 609
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From: Oslo, Norway
Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Re: ECU Upgrade question??

Don't quote me on this, I'm not an authority, but:
In principle you'll want the manual programming, and then you'll want a manual wiring harness for it since there are most likely (small) differences in signals & pinouts.
There may be workarounds so you won't need a whole new harness but others will have fill in on that.
Looking at both models wiring diagrams would reveal what (if anything) needs to be done.
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Old Dec 28, 2008 | 11:39 PM
  #3  
BigBadLou's Avatar
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Joined: Jul 2004
Posts: 2,989
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: ECU Upgrade question??

Since you're putting in a manual transmission, you want a manual chip in the ECM.
Actually, there is no need to buy a whole new ECM. You can just buy a new manual chip and replace the automatic chip. It simply pulls out of the ECM.

Hope this helps.
Lou
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Old Dec 29, 2008 | 12:57 AM
  #4  
redbird92''s Avatar
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Joined: Nov 2006
Posts: 138
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From: michigan
Car: 92' firebird
Engine: L03
Transmission: 700R4
Axle/Gears: 10 bolt POSI 3.73's
Re: ECU Upgrade question??

swap chips with a manual since thats what you have now
its pretty simple
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