Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 05-18-2010, 04:16 PM   #1 (permalink)
EcoModding Lurker
Join Date: Jan 2009
Location: Selah, WA
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Electronic vs vacuum/mechanical timing advance


I have a 1991 Metro with a vacuum advance distributor. I also have a junker 1992 Metro with an electronic advance distributor. Based on the assumption the elctronic control is better than the vacuum control, I would like to use the 1992 distributor. After looking at the wiring diagrams, it appears that I would have to swap out the ECU if I were to use the electronic distributor in the 1991 Metro.

Is this correct?

Are there any issues with swapping a 1992 ECU with a 1991 car? Will I have to swap any other components in order to make the ECU happy? Will I have to move wires around on the multiwire connectors?

- Peter

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 05-19-2010, 05:51 AM   #2 (permalink)
Too many cars
Gasoline Fumes's Avatar
Join Date: Oct 2009
Location: New York State
Posts: 1,520

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 (no IMA) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 64.13 mpg (US)
Thanks: 1,241
Thanked 760 Times in 451 Posts
You'll have to make a bunch of changes to the wiring. The '92 ECU won't plug into the '91 wiring harness.
2000 Honda Insight
2000 Honda Insight
2000 Honda Insight
2006 Honda Insight (parts car)
1988 Honda CRXFi
1994 Geo Metro

  Reply With Quote
Old 07-02-2010, 01:18 AM   #3 (permalink)
EcoModding Lurker
Join Date: Sep 2009
Location: New York
Posts: 53
Thanks: 0
Thanked 1 Time in 1 Post
Will it be that hard to do? I was thinking of swapping the distributor too but if it is too painstaking then I might change my mind instead.

Last edited by mikeross; 07-06-2010 at 01:49 AM..
  Reply With Quote
Old 07-09-2010, 01:23 PM   #4 (permalink)
EcoModding Lurker
Join Date: Jun 2009
Location: San Antonio, TX
Posts: 12
Thanks: 0
Thanked 2 Times in 1 Post
My experience with the Metro is very limited, but I've lots with some other cars that also went from Mech -> Elec on the distributor. And, the ones I know about, the swap would be very very hard to do. 99% of them do indeed require you to swap the ECU over, and most of these swaps involved a lot more than just plug-n-play. I can't think of one where all of the ECU Pins even matched. Granted, the Metro might not be as complex as others, but I think you'll be doing way more work than it's really worth. The gains will most likely not justify the work.

Not the answer your looking for I'm sure, sorry I couldn't offer more help.

Sorry, new users are not permitted to post links in their signatures.
  Reply With Quote
Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to advance timing? wyatt EcoModding Central 14 03-16-2010 05:14 AM
Experimenting with tuning leaner and ignition timing. Trike EcoModding Central 3 10-16-2009 01:22 PM
Advance or Retard Timing for better mpg? C3Killer EcoModding Central 8 07-22-2008 08:05 PM
Timing advance or retard? klrv6 General Efficiency Discussion 4 06-09-2008 10:51 PM
Metro Timing Advance?? SirKeats EcoModding Central 10 05-29-2008 02:24 AM

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com