ECM upgrade (1227730) for stock 2.8 (Page 8/107)
Fierobsessed JAN 18, 03:32 PM
It *is* possible to use this computer with the 2.5L 4. Though it was never intended to control this engine, it was used on the 2.0 OHC, which is simular in some ways.

The big selling point with the V6's is that the two connectors on the V6 harness plug into the 7730, the wires just have to be moved around a lot, and a third connector added, and some of the pins moved over to it. The Iron duke has what are called PCB edge connectors, which are not compatible with the 7730, therefore you would have to change all the pins on all the connectors to get it to work. THEN you will need to tune it to the duke, which behaves and is tuned pretty differently from a 2.0L OHC. Im not even sure if the ignition systems are compatible, but they likley are the same knowing GM.
Icelander JAN 18, 03:35 PM
Good to know. Sounds like if I'm going to go to all that effort, I might be better off waiting to I do my engine swap and use the ECU from that vehicle.

Thanks for the feedback!

[This message has been edited by Icelander (edited 01-18-2007).]

vortecfiero JAN 19, 08:25 PM
another candidate ecm would be the '749
fan control
boost control
boost controled spark timeing and fuel tables (calibrations exist for 50lb injectors and 3 bar map sensors)
will run with single or dual knock sensors
will recognise wideband with an easy change to the $58 code
programable shift lights or auto trany shift locations
most tuning soft wear will work with the $58 code
a new self tuning (to a certain point) $59 code is on the horizon
lots of naturally asperated GM vehicles used this ecm besides the various turbo applications
Data Master will log all the ecm data for over 2 hrs ($100 + laptop)
moats has a chip adapter that allows you to burn 16 diff bins on one chip and switch easily between them

ECM $35 on ebay
tuner cat is free
moates single bin adapter is about $40
reusable chips are about $5
chip burner is $85

and Cooter on this board has already done a 2.8 so the bins exist to get you started



------------------

GT just waiting for the conversion
84 Fiero Turbo Vortec 4300 Phantom GT
L35 block, Syclone Intake and ECM
T31 turbine with T04B S3 compressor
super T61 waiting for next winter
www.cardomain.com/id/vortecfiero
Murphy's Constant Matter will be damaged in direct proportion to its value
Murphy's Law of Thermodynamics Things get worse under pressure.
Arthur C. Clarke "Any significantly advanced technology is indistinguishable from magic"

[This message has been edited by vortecfiero (edited 01-20-2007).]

Darth Fiero JAN 21, 02:17 AM
Got a spreadsheet put together for the wiring conversion. It can be viewed/downloaded here:

http://www.gmtuners.com/files/Fiero2.8_to_7730.pdf

I have wiring diagrams and pinouts for both the Fiero 2.8 ECM's as well as the 90-92 Camaro 3.1 ECM available for download at my website.

-ryan
Fierofreak00 JAN 21, 10:37 AM

quote
Originally posted by Darth Fiero:

Got a spreadsheet put together for the wiring conversion. It can be viewed/downloaded here:

http://www.gmtuners.com/files/Fiero2.8_to_7730.pdf

I have wiring diagrams and pinouts for both the Fiero 2.8 ECM's as well as the 90-92 Camaro 3.1 ECM available for download at my website.

-ryan


Thanks Ryan, can't wait to get started! I hope your're on call for questions. -Jason
Knight JAN 21, 11:23 AM
First thanks Darth for the ecm comparisons (that ought to give me something to do for a while comparing them).
The 7749 functions and abilities and such as listed by vortecfiero are all good. Since the 7730 and 7749 are so similar, do these also apply to the 7730?
What does self-tuning (to a certain point) mean? And as compared to the Fiero's ecm? I thought that everytime you disconnected your battery that the ecm would have to relearn some parameters/values? Does the Fiero ecm not do that?
With the use of a wideband O2 sensor, will the ecm make adjustments to the fuel and spark to keep the A/F ratio at where it is programmed tho keep it. Is this the self tuning that was mentioned?
Who is moates and cooter? Please provide links to both.
Thanks
Fierofreak00 JAN 21, 08:41 PM
Rebump back to the top of page 1
Knight JAN 21, 11:00 PM
Huh?
Knight JAN 21, 11:05 PM
Is this a 7730? The description lists it as "THE PART NUMBER IS 16171331 AND THE SERVICE NUMBER IS 01227/30" on eBay. :http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=009&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=190071721326&rd=1,1
If so, then this is my new ECM!
Thanks.
Darth Fiero JAN 22, 12:32 AM

quote
Originally posted by Knight:

Is this a 7730? The description lists it as "THE PART NUMBER IS 16171331 AND THE SERVICE NUMBER IS 01227/30" on eBay. :http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=009&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=190071721326&rd=1,1
If so, then this is my new ECM!
Thanks.




Yes, that looks like the 7730 ECM you would need.