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Top 2GNT Technical Performance/Engine Engine Management Systems & Controllers topic #161
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Subject: "Any need for the factory ECU?" 1 | 2 | Previous topic | Next topic
extreme97ntOct-06-04 04:25 PM
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#161, "Any need for the factory ECU?"


          

OK I got my megasquirt kit in the mail the other day. I got it all together and tested with the test kit. Is there any need for the factory ecu? I was planning on replacing all the gauges wiht autometer cobalts. What else would I need the factory ecu for? HVAC? It would be nice to get rid of all the bs wireing in the car.

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

  

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MrSlickOct-06-04 04:35 PM
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#162, "RE: Any need for the factory ECU?"
In response to Reply # 0




          

You could get rid of the stock pcm... but some of the functions that it does are below, some can be replaced some can't:

Spedometer/Odometer - pcm takes the tranny speed sensor and uses that to make the signal sent to the speedo. Possible to fake with some work.
HVAC - pcm turns on the clutc and extra AC fan. No problem to rewire.
OBD-II - pcm controls this. Do you need to have it in your state?
Ignition - as of today the pcm is still needed to do the ignition unless you do the EDIS. My ignition setup should be running soon though. Then no more need for stock pcm.

That's about all I can think of for now...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Megasquirt powered 420A
Custom turbo system

http://www.ms-custom.com

  

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extreme97ntOct-06-04 04:47 PM
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#163, "RE: Any need for the factory ECU?"
In response to Reply # 1


          

Thanks fpr the fast response. I think I will be ripping it out then. I want the MS to run everything. The car is no longer my daily driver so it is a project/track/weekend car. As for inspection I will just buy a sticker when it comes time. How about power windows and locks? Will that stuff need to be rewired too?


best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

  

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TeametxOct-06-04 04:49 PM
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#164, "RE: Any need for the factory ECU?"
In response to Reply # 2




          

What about the IAC?

____________________________________________________
four nails four corners four riders and four horses

  

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extreme97ntOct-06-04 04:51 PM
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#165, "RE: Any need for the factory ECU?"
In response to Reply # 3


          

The Mega Squirt will control that too, no?

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

  

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MrSlickOct-06-04 05:02 PM
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#166, "RE: Any need for the factory ECU?"
In response to Reply # 4




          

Good one etx... I knew I was forgetting something.

Right now the stock pcm controls our IAC.
There isn't any Ms code yet for a "Chrysler" IAC.

So you either replace it with sonother type of IAC... GM maybe... or do something else... lol.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Megasquirt powered 420A
Custom turbo system

http://www.ms-custom.com

  

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jsupetranOct-06-04 05:05 PM
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#167, "RE: Any need for the factory ECU?"
In response to Reply # 4




          

WOW so this thing can control everything? WOW again. I think we may have our weapon to run with the 4g63rs. What about if your auto? Are we out of luck (like we are with the afx ecu)?


-------jezreel
1998 GS with hrc stage 2, sfmu, ml, prokits, Greddy warning gauges: egt, boost gauge, and oil pressure, apexi tt, haydans tranny cooler, costum dp, groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting

  

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TeamMetalJimOct-06-04 07:09 PM
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#168, "RE: Any need for the factory ECU?"
In response to Reply # 6




          

The voltage regulator is built into the ECU. http://forums.2gnt.com/dcboard.php?az=show_topic&forum=4&topic_id=66028&mesg_id=66028&page=


95 Eclipse RS : 5 speed
15.7 @ 87.9mph
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

  

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SilverBullet20gOct-07-04 04:30 AM
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#169, "RE: Any need for the factory ECU?"
In response to Reply # 7


          

Wow, I thought the MS was just a piggyback... I already ripped out my PCM and harness.. All of my wiring and EMS are now behind my glovebox..

Mr. Slick: How much would it be for a full stand alone with ignition control? I know you said it's not done yet, I was just trying to compare what I have spent on my AEM EMS system. I know yours is a lot cheaper.

_____________________________________
Scott
90' GSX, 06' Effo SSL

(parting out 95 GS)

  

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MrSlickOct-07-04 06:04 AM
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#170, "RE: Any need for the factory ECU?"
In response to Reply # 7




          

Originally posted by MetalJim
The voltage regulator is built into the ECU. http://forums.2gnt.com/dcboard.php?az=show_topic&forum=4&topic_id=66028&mesg_id=66028&page= 95 Eclipse RS : 5 speed 15.7 @ 87.9mph Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html


That is correct...

Plus dont forget that the PCM creates the 9V for the cam and crank sensors... if we use the crank sensor with no pcm we need 9V for it

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Megasquirt powered 420A
Custom turbo system

http://www.ms-custom.com

  

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extreme97ntOct-09-04 01:50 AM
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#171, "RE: Any need for the factory ECU?"
In response to Reply # 9


          

Hmmmm... Maybe I will leave it in there and slowly try and remove it. I can see nothing working If I just rip it out.

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

  

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