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Old 08-05-2008, 12:27 PM   #1
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Default Basic data needed (PW, input type etc)

Looking to set up a stand alone ecm for a 91 1.6 liter. Need the following basic info:

ISCV Pulse width Frequency and duty cycle range
Power steering switch input (+12v or float to ground?)
A/C compressor switch input (+12v or float to ground?)
Clutch switch, looks like a float to ground, but is it supposed to raise or lower the idle when grounded?

Using stock 1.6 injectors. at 8PSI, what % duty cycle are the injectors running, or do I need to go bigger (system will never run morre than 10PSI boost).

THANKS!
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Old 08-05-2008, 12:32 PM   #2
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Search much?
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Old 08-05-2008, 12:33 PM   #3
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Under ISCV I only find my own posts
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Old 08-05-2008, 01:00 PM   #4
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Probably because most people have been calling it an IAC - different terminology. If your standalone is a MS, you'll find the IAC settings in the MSQ file for the MSPNP.
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Old 08-05-2008, 02:20 PM   #5
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Thanks. From the FSM saw the IAC as a temp controlled bypass, while the ISVC is ECM controlled. I have a DIY ECM, not a MS, so I am starting from scratch. Will search under IAC, Thanks.
So people have complaints mostly they can't run their A/C properly? And no CEL so they can't pass inspections?
Any other major issues for daily drivers? I'd like to try my hand at a fix for each.
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Old 08-05-2008, 10:51 PM   #6
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bump
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Old 08-06-2008, 09:50 AM   #7
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download the msq file from the mspnp website for your engine and take it from there.

http://www.megasquirtpnp.com/models/...with%20AFM.msq

And here's a 1.6L pinout which should hopefully answer your other questions:


How about posting some info on your DIY ECM? Sounds interesting. Maybe a few pictures.
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Basic data needed (PW, input type etc)-ecupinout.jpg  
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Old 08-06-2008, 08:24 PM   #8
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Default My DIY

Thanks for the file and the pin out, big help.Here are some quick pixs, I'll add more as I go along. I'm sure I'll have alot more questions.
Thanks again.
Here is the unit. Built inside the stock box.
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Basic data needed (PW, input type etc)-p8060009.jpg   Basic data needed (PW, input type etc)-p8060013.jpg   Basic data needed (PW, input type etc)-p8060010.jpg  
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Old 08-06-2008, 08:28 PM   #9
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Default Car build photos

and here are a few pics of the car build.
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Basic data needed (PW, input type etc)-dsc00899.jpg   Basic data needed (PW, input type etc)-dsc00896.jpg  
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Old 08-06-2008, 08:28 PM   #10
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wow, impressive. is the ECM a commercially available product? doesnt look like a prototype at all.
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Old 08-06-2008, 08:31 PM   #11
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Potentially this will be available soon, IF I can get all the accessories and the code flash to work correctly. If not, then perhaps as a "for off-road use only" item.
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Old 08-07-2008, 10:25 AM   #12
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Did you build that one yourself? If not, then who did?
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Old 08-08-2008, 10:45 PM   #13
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My company builds these units for CNG powered heavy duty vehicles (buses, trucks etc). I'm just playing with this unit to see if we can get a decent result for the Miata track car. If so, I'll make some available real cheap for those willing to share their files with me!
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Old 08-09-2008, 04:51 AM   #14
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I assume based on another post that this is one of the OmniTek EM series.

This line on your web page blew my little Megasquirt world away:
"The Omnitek EMS offers self diagnostic capabilities (OBD)"
Now if you could output OBDII codes...

Is this a new model? EC44-M maybe?

BTW, it's nice to have someone w/ your racing back ground on the board. Welcome.
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Old 08-09-2008, 10:28 AM   #15
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This is actually an EC66, capable of driving a 6 cylinder. The EC44 runs this little beauty on E85


read a bit more about it here..http://www.autoblog.com/2008/02/25/b...h-the-fun-cup/

I am working on the OBD II outputs.....
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Old 08-09-2008, 10:42 AM   #16
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Oh and thanks for the Welcome!
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