Fordmods Logo

Minimum wiring to still run stock ecu. 

 

Page 1 of 1 [ 8 posts ] 

 
 Post subject: Minimum wiring to still run stock ecu.
Posted: Wed Apr 13, 2011 3:34 pm 
Parts Gopher
Offline

Age: 26

Posts: 92

Joined: 11th Jan 2011

Ride: Ford Falcon AUII

Location: Newcastle
NSW, Australia

Hey, deciding to go to an aftermarket ECU (megasquirt) but need to retain the stock ecu in my AUII falcon to operate the auto box. Can anyone tell me if i'll have any issues simply disconnecting injector and spark plug outputs, and also what do I need to leave connected to ensure the ecu will still control the box reliably and not enter LHM.

Thanks, Thomas.

 

_________________

My Megasquirt 3 install: here

Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Thu Apr 14, 2011 11:34 pm 
Parts Gopher
Offline

Age: 26

Posts: 92

Joined: 11th Jan 2011

Ride: Ford Falcon AUII

Location: Newcastle
NSW, Australia

*bump* anyone?

 

_________________

My Megasquirt 3 install: here

Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Fri Apr 15, 2011 10:37 pm 
Getting Side Ways
Offline

Posts: 539

Joined: 30th Nov 2004

Location: Melbourne
VIC, Australia

You will have no issues disconnecting the Injectors or Spark Outputs,

Assuming you are using a ms1 or 2,

Splice into a Power that is 12v ignition on (AND 12v CRANKING)
Run 2 banks of 3 - or 3 banks of 2 injectors.
02 sensor (just get a wide-band - LC1 is around ~$220 best money will spend for tuning you car)
Share the TPS signal
Share the Air Temp
I would put in a E series Thermostat housing so you can use a separate water temp sensor. (as i am pretty sure it can not be shared - AU runs a T-MAP)
Fuel Pump - Leave the stock ECU to control
Idle Speed Control - leave the stock ecu to control this until you get your tune sorted - if it idles crap and stalls when load is applied then look into controlling this using the MS
Obviously run a vacuum line to internal MS MAP sensor

Remember to run all your earth to a good ground, dont just use the earth screw that holds the stock ecu in place. Best to go to a good engine ground.

How are you controlling the Coil Packs ?
EDIS module ?
Adding Extra Spark Outputs ?
Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Sun Apr 17, 2011 10:52 am 
Parts Gopher
Offline

Age: 26

Posts: 92

Joined: 11th Jan 2011

Ride: Ford Falcon AUII

Location: Newcastle
NSW, Australia

Hey, i'm going to be using a megasquirt 3 as my car is currently mixer gas and once I get the megasquirt working on petrol i'll change it over to sequential injected gas using the dual fuel/dual table option. The coil packs will be run off the MS3X outputs (although I will be DIYing the output as the MS3X board doesn't do peak and hold for the injectors, so I need to make my own board for this anyway)

Thanks, Thomas.

 

_________________

My Megasquirt 3 install: here

Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Mon Apr 18, 2011 2:11 pm 
Getting Side Ways
Offline

Posts: 539

Joined: 30th Nov 2004

Location: Melbourne
VIC, Australia

Does the ms3x have built in ignitors on each spark output ?
Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Mon Apr 18, 2011 4:26 pm 
Parts Gopher
Offline

Age: 26

Posts: 92

Joined: 11th Jan 2011

Ride: Ford Falcon AUII

Location: Newcastle
NSW, Australia

No, its logic level output. I won't be using the MS3X though as I need to run LPG (low-z) injectors - the MS3X is for high z only.

Thanks, Thomas.

 

_________________

My Megasquirt 3 install: here

Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Mon Apr 18, 2011 5:51 pm 
Getting Side Ways
Offline

Posts: 539

Joined: 30th Nov 2004

Location: Melbourne
VIC, Australia

i meant coil ignitors,
i am assuming you are going to run missing tooth crank sensor ?
Top
 Profile  
 
 
 Post subject: Re: Minimum wiring to still run stock ecu.
Posted: Mon Apr 18, 2011 10:01 pm 
Parts Gopher
Offline

Age: 26

Posts: 92

Joined: 11th Jan 2011

Ride: Ford Falcon AUII

Location: Newcastle
NSW, Australia

Yes, I plan to run the stock missing tooth crank and cam sensor.

 

_________________

My Megasquirt 3 install: here

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 8 posts ] 

Who is online

Users browsing this forum: No registered users and 16 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Dec 12, 2017 12:44 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names