Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

I'm swapping spfi engine (88 GL) for a mpfi (85 XT)...


  • Please log in to reply
4 replies to this topic

#1 Mike386

Mike386

    USMB Regular

  • Members
  • PipPipPip
  • 40 posts
  • Florence

Posted 29 January 2005 - 12:04 PM

I'm swapping spfi engine (88 GL) for a mpfi (85 XT)...

Are the wiring connections and signals to the engine the same for both? Can I use my wiring harness on the mpfi and just swap the computers?

-Mike

#2 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 29 January 2005 - 01:28 PM

no. one injector, opposed to 4 injectors to controll.

no worky at all.

you gotta swap the computer and wiring with the engine.

#3 Mike386

Mike386

    USMB Regular

  • Members
  • PipPipPip
  • 40 posts
  • Florence

Posted 29 January 2005 - 02:40 PM

Thanks for the info. I pulled the computer and wiring, now I just have to carefully disassemble my dash. The other car was going to the crusher so all I needed was a crow bar to disassemble that dash. That was actually fun! :-)

no. one injector, opposed to 4 injectors to controll.

no worky at all.

you gotta swap the computer and wiring with the engine.



#4 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 29 January 2005 - 03:20 PM

i surely wouldnt tear apart your stock dash for this.

use the mpfi harness and computer as a stand alone piece of the car.
you can easily wire in two relays, to the mpfi harness, and have it operated by a switch. then you stick your computer under the dash somewhere, or use the long xt harness, and stick it behind your passenger seats, or under them.

doin it this way, you could have the engine runing on the floor, and you only have to wire in your stock spfi guages, which will all work, just like they did.

#5 Mike386

Mike386

    USMB Regular

  • Members
  • PipPipPip
  • 40 posts
  • Florence

Posted 29 January 2005 - 04:54 PM

Excellent! :) The easier the better. I’ll be dropping the “new” engine in, in a couple of days, the weather is turning to snow for the next day or two.:-\ Thanks again for the input; I’m really trying to keep this suby alive. She’s been a great little 4-wheeler for five years now.



i surely wouldnt tear apart your stock dash for this.

use the mpfi harness and computer as a stand alone piece of the car.
you can easily wire in two relays, to the mpfi harness, and have it operated by a switch. then you stick your computer under the dash somewhere, or use the long xt harness, and stick it behind your passenger seats, or under them.

doin it this way, you could have the engine runing on the floor, and you only have to wire in your stock spfi guages, which will all work, just like they did.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users