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| ECM upgrade (1227730) for stock 2.8 (Page 51/107) |
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Darth Fiero
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FEB 10, 02:30 PM
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| quote | Originally posted by Blacktree:
Just out of curiosity, does the ECM pay attention to knock sensor input when in open-loop mode? |
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Yes. But there is a constant in the programming that can be adjusted that tells the computer when to enable knock retard based on engine coolant temperature. (stock is typically 65 deg C)
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Blacktree
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FEB 10, 04:27 PM
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Daviero
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FEB 15, 12:32 AM
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Any chance of having the drawing of the latest revision of the adaptor plate posted? I'd like to make a version of it for my Northstar which will run on the Ryan Hess version of the 7730. I'd like to not reinvent the wheel if I have a choice. You can see so much farther when you stand on the shoulders of giants! ------------------
Daviero - 88 N* GT
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Gwain
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FEB 15, 10:45 AM
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Daviero:
Here is the final revision we produced the plates to:
We do, of course, have extras on the shelf if you'd like to purchase one! 
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Marc in sunny Titusville, FL
- 84 SE son's car, loaded
- 85 Coup w/V6 transplant
- 85 GT newly on the road
- 86 SE/GT conversion just bought - big plans!
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Pyrthian
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FEB 15, 10:55 AM
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one thing I was wondering: Darth: the A/C request goes to the ECM - is it possible to have an "alternate" program fro A/C on & A/C off to have something like a "performance" code & "MPG" code?
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Darth Fiero
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FEB 15, 07:43 PM
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| quote | Originally posted by Pyrthian:
one thing I was wondering: Darth: the A/C request goes to the ECM - is it possible to have an "alternate" program fro A/C on & A/C off to have something like a "performance" code & "MPG" code? |
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With the tuning software I have available to me there is currently no way I can set up an ECM in the way you are asking about. Basically what needs to be done is the code mask you want to use needs to be hacked to the OS level and then changes need to be made to the OS so the ECM will do what you are asking. To be honest I'm a novice when it comes to writing code in this way so I don't think I can be of much help here. But there are people out there who have been able to do what you ask with other pre-OBD-2 computers so I'm sure it's possible. It's just a matter of finding someone who knows how to do it and who is willing.
-ryan
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Will
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FEB 15, 11:43 PM
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With a dual image ROM and a bit of wiring, you can change between tunes at the flip of a switch.
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ALLTRBO
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FEB 16, 08:15 AM
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Darth Fiero
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FEB 16, 02:37 PM
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http://www.moates.net/produ...25_36&products_id=33
Also recommend this be used with the EX Remote for remote switching ability: http://www.moates.net/produ...25_41&products_id=47
I was just going to add that I can make a multi-program chip for you which can be used in conjunction with the above moates.net hardware that will give you the ability to switch between multiple programs on-the-fly. The 7730 ECM uses a 27C256 sized chip program for most of the code masks that would be used in a Fiero application which means I could set your "thumbwheel" chip up with as many as 16 different programs.
-ryan
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mswenson289
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FEB 17, 12:24 PM
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Any ideas or comments welcome. Hope this is the right place to post. I am replacing the 2.8 w/ camaro 3.4 93-95 intend to use DIS and 7730 ECM. Thought I would use the 3.4 lower intake manifold to eliminate the cold start injector and fan sensor. Now my concern the 2.8 lower intake has a fitting that the manual refers to as "Cold start valve air tube" running between the intake and the Throttle body. How is this used and will there be an impact by plugging the port on the TB.
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