Conversion TPI ECM
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Joined: Dec 2006
Posts: 71
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From: Little Rock Arkansas
Conversion TPI ECM
Ok, here we go..... I just purchased my first Vette 
. It's an 84 with a TPI. The car runs, but if you throttle hard, it sucks a lot of air, kicks down a gear, makes a ton of muffler noise, and doesn't accelerate despite the attempted effort. I noticed there wasn't a MAF. The ECM is 1227730. Isn't this a speed density ECM?
. It's an 84 with a TPI. The car runs, but if you throttle hard, it sucks a lot of air, kicks down a gear, makes a ton of muffler noise, and doesn't accelerate despite the attempted effort. I noticed there wasn't a MAF. The ECM is 1227730. Isn't this a speed density ECM?
Last edited by Moto1; Feb 20, 2007 at 09:02 PM.
Racer
Joined: Sep 2004
Posts: 258
Likes: 0
From: Coram NY
Here's something I found while searching for your ECM
http://www.pirate4x4.com/forum/archi.../t-487296.html
something about ecm conversions.
What MAF is it and how much do you want for it?
Thanks,
Tom
http://www.pirate4x4.com/forum/archi.../t-487296.html
something about ecm conversions.
What MAF is it and how much do you want for it?
Thanks,
Tom
Thread Starter
Advanced
Joined: Dec 2006
Posts: 71
Likes: 0
From: Little Rock Arkansas
Here's something I found while searching for your ECM
http://www.pirate4x4.com/forum/archi.../t-487296.html
something about ecm conversions.
What MAF is it and how much do you want for it?
Thanks,
Tom
http://www.pirate4x4.com/forum/archi.../t-487296.html
something about ecm conversions.
What MAF is it and how much do you want for it?
Thanks,
Tom
Last edited by Moto1; Feb 21, 2007 at 03:36 PM.
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Joined: Dec 2006
Posts: 71
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From: Little Rock Arkansas
Case
Last edited by Moto1; Feb 21, 2007 at 03:46 PM.
Racer
Joined: Apr 2003
Posts: 426
Likes: 0
From: Detroit MI
Download the software for scanning and buy or make a harness and interface for scanning the 730 ECM.
For software try Datamaster, Tunerpro, Diacomm, and ECM852.
With this you will be able to see and diagnose what is going on with all the sensors, spark and fuel system.
There is also a forum for 3rd gen F body at thirdgen.org that has lots of information on 730s.
For software try Datamaster, Tunerpro, Diacomm, and ECM852.
With this you will be able to see and diagnose what is going on with all the sensors, spark and fuel system.
There is also a forum for 3rd gen F body at thirdgen.org that has lots of information on 730s.
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Thread Starter
Advanced
Joined: Dec 2006
Posts: 71
Likes: 0
From: Little Rock Arkansas
Download the software for scanning and buy or make a harness and interface for scanning the 730 ECM.
For software try Datamaster, Tunerpro, Diacomm, and ECM852.
With this you will be able to see and diagnose what is going on with all the sensors, spark and fuel system.
There is also a forum for 3rd gen F body at thirdgen.org that has lots of information on 730s.
For software try Datamaster, Tunerpro, Diacomm, and ECM852.
With this you will be able to see and diagnose what is going on with all the sensors, spark and fuel system.
There is also a forum for 3rd gen F body at thirdgen.org that has lots of information on 730s.
Advanced
Joined: Oct 2003
Posts: 67
Likes: 1
From: Renton Wa.
I believe the corvette used a 727 ecm for speed density (MAP) starting in '90, it is the same as the 730 except it was made to be water resistent because it is mounted in the engine compartment not inside the car. Also has special waterproof connectors. And it interfaced with the digital dash (CCM).
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Ok, here we go..... I just purchased my first Vette . It's an 84 with a TPI. The car runs, but if you throttle hard, it sucks a lot of air, kicks down a gear, makes a ton of muffler noise, and doesn't accelerate despite the attempted effort. I noticed there wasn't a MAF. The ECM is 1227730. Isn't this a speed density ECM?
. It's an 84 with a TPI. The car runs, but if you throttle hard, it sucks a lot of air, kicks down a gear, makes a ton of muffler noise, and doesn't accelerate despite the attempted effort. I noticed there wasn't a MAF. The ECM is 1227730. Isn't this a speed density ECM?If you can do a scan (using tunercat, or datamaster) of the problems your having i'll look it over for you and give you some advice to fixing it.
Don't switch to MAF, and don't switch to crossfire.
-- Joe
Thread Starter
Advanced
Joined: Dec 2006
Posts: 71
Likes: 0
From: Little Rock Arkansas
Sounds like somebody repinned it to the '730. Thats the ideal setup, IMO. I repinned all my N/A cars to '730, and boosted cars to '749.
If you can do a scan (using tunercat, or datamaster) of the problems your having i'll look it over for you and give you some advice to fixing it.
Don't switch to MAF, and don't switch to crossfire.
-- Joe
If you can do a scan (using tunercat, or datamaster) of the problems your having i'll look it over for you and give you some advice to fixing it.
Don't switch to MAF, and don't switch to crossfire.
-- Joe
