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Subaru EJ25 Plug-n-Play Megasquirt Project
Posted: Sat Jan 23, 2010 8:20 pm
by thebigmacd
I know I'm going crazy with all the posting on various forums, but I'd like to get the word out that the MS2 6/7 code works well and we've made a plug-and-play ECU for the Subaru 94-pin setup on late-90s EJ25s. A DIY-EFI related equivalent may be fun
http://msruns.com/viewtopic.php?f=102&t=22937
Re: Subaru EJ25 Plug-n-Play Megasquirt Project
Posted: Sun Jan 24, 2010 12:08 am
by jharvey
Nice, if I didn't already have the utec in my suby, I might be interested in trying it out. Do you have a schematic for that board you prototyped off to the side?
Good luck with the regulator.
Re: Subaru EJ25 Plug-n-Play Megasquirt Project
Posted: Sun Jan 24, 2010 4:32 am
by thebigmacd
jharvey wrote:Nice, if I didn't already have the utec in my suby, I might be interested in trying it out. Do you have a schematic for that board you prototyped off to the side?
Good luck with the regulator.
Our circuit designs are currently all over the place...on the whiteboard, on graph paper, in KiCad etc. We hope to compile all of the info into a website.
Re: Subaru EJ25 Plug-n-Play Megasquirt Project
Posted: Sun Jan 24, 2010 7:56 am
by GartnerProspect
Hey that's pretty slick!
I have a Subaru I'm probably going to do something real similar with now that the MS2 code works.
That ECU looks about the same as my 97/98 2.2 Impreza's, so I'm assuming this is a MAF based engine? I thought they changed the ECU when they went speed density.
I'm very interested in the details if it's a MAF arrangement. I was thinking I'd like to keep the ability to swap back to my stock ECU in a pinch while I'm playing with various ideas and expanding beyond MS.
Re: Subaru EJ25 Plug-n-Play Megasquirt Project
Posted: Sun Feb 07, 2010 11:01 pm
by thebigmacd
GartnerProspect wrote:Hey that's pretty slick!
I have a Subaru I'm probably going to do something real similar with now that the MS2 code works.
That ECU looks about the same as my 97/98 2.2 Impreza's, so I'm assuming this is a MAF based engine? I thought they changed the ECU when they went speed density.
I'm very interested in the details if it's a MAF arrangement. I was thinking I'd like to keep the ability to swap back to my stock ECU in a pinch while I'm playing with various ideas and expanding beyond MS.
We are just ignoring the MAF and ran a MAP line. There is also no IAT sensor on these cars so we ran an extra wire out of the MS and added a GM IAT to the airbox.