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
- - - - -

Emission passing w/ swapped in non-egr ej22


  • Please log in to reply
4 replies to this topic

#1 speed_ga

speed_ga

    New User

  • Members
  • Pip
  • 6 posts
  • Georgia

Posted 18 November 2009 - 08:41 AM

Ok emissions is coming up and I have a 99 legacy sus with a 1998 EJ22 engine that doesn't have a EGR valve.

So of course my check engine light is on and I can't pass emissions with it on.

Would buying a ECU from ebay from a older legacy and swapping it be a good solution to this problem?

I also see that I could find a intake manifold that would fit and swap...but I have yet to find one with a offset bolt pattern that has a egr valve.

Third...I have contemplated installing a egr on the current engine...it has a place for it that is plugged with a plate. (not sure how much work this would be)


Anyways I would prefer just buying a different ecu...it would be easiest...but would it work?

also wanted to add. I have the intake manifold from the ej25 that has a egr valve set up on it already.

Edited by speed_ga, 18 November 2009 - 08:51 AM.


#2 Legacy777

Legacy777

    Moderator

  • Moderator
  • 12,602 posts
  • Houston, Tx

Posted 18 November 2009 - 11:57 AM

I'd go the ECU route.

Doing the other stuff just sounds like more of a pain.

Only concern I can see with the ECU, is if the ECU has a year/date on it, and they try and match that to the VIN records.

This is for an auto trans car correct?

Other option I suggest would be to just plug in the EGR valve from the old motor and not have it hooked up to anything. Not sure what sort of feedback loop is setup....but if there's not something checking things, you might be able to get away with that..

#3 speed_ga

speed_ga

    New User

  • Members
  • Pip
  • 6 posts
  • Georgia

Posted 18 November 2009 - 12:27 PM

yes it is for a automatic

I do think I will go with the ecu switch and see what happens.

#4 The Scooby

The Scooby

    EJ Swap Junkie

  • Members
  • 1,752 posts
  • South Seattle

Posted 18 November 2009 - 04:15 PM

you cannot go older on ECU's, you have to find one with the same number or +2 to get it to run.

you are going to have to find a way to trick the ECU into thinking that the EGR is there, with a resistor or something.

#5 WoodsWagon

WoodsWagon

    Formerly 91Loyale

  • Members
  • 3,945 posts
  • NH

Posted 22 November 2009 - 01:41 AM

I'm not sure that a resistor will work, the ecu probably looks for a drop in the MAP sensor signal to reflect the vacuum leak created by opening the egr valve. It would probably throw a egr flow DTC.

With a manual transmission car, you could proably put in a older ECU and have it be fine. But with an automatic, the ECU will always be expecting the EGR system to be in place.

That's why it's recommended that you source the 2.2 out of an automatic car so that it has the EGR system.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users