Leighos

Try Trademe, thats where I got mine. http://www.trademe.co.nz/Trade-Me-Motors/Car-parts-accessories/Subaru/Exterior/auction-207060259.htm They're a bit on the pricey side, mine were $50 for the pair.

I've done the same on my BD5 RS. Low beam = projector only High beam = projector + high beam Check this vid out that someone went to the trouble of doing for me once

That's what my plan is - convert to 3 plug and use a standard WRX/Forester ECU while I still have my EJ20H (std cast pistons etc) in the car, and then when my forged STi engine rebuild is complete I'll upgrade injectors and use an STi ECU with a decent turbo.

A TD04 is smaller than a VF8, about the same as a VF10 so it spools up quick quite low down but then runs out of puff at higher RPM. Theres a few TD04's selling on TM, in fact I just sold one last week for $60!

Nah you'll be sweet if you stick with an ECU from a standard WRX or Forester, you only need to upgrade injectors if you're running an STi ECU and turbo. I might have a spare Forester ECU if your interested, PM me. What Turbo are you currently running? Mine is just a VF10 and it goes quite well running on the greys and Mines TT ECU!

Sweet as. Just to add also, when looking for your ECU, you'll most likely need the AFM that suits that ECU, and even injectors if your going STi ECU.

You're not doing it twice, this is just information gathering... I have yet to find a conversion pinout diagram that converts a 4 plug directly to a 3 plug! Maybe I'll draw up my own once I've done it and ironed out any bugs, then post it up for all to use

Ok this one will help convert from the 4 plug EJ20H ECU to a 4 plug EJ20G Then you can get the pin outs for whichever 3 plug ECU you're going to get and go from there. Google is your friend here. Here are some that I've used for the 3 plug stuff. http://www.northursalia.com/modifications/misc/wiring/wiring.html

Hows you auto electrical skills? You'll be doing the same conversion as what I'm doing then. First thing is get as much info as you can get before you even look at your ECU and loom, get pinouts etc and think about exactly how you are going to do it. Get yourself the appropriate ECU, I originally was going to convert to 4 plug EJ20G (early Legacy & WRX) but have since decided to go the later 3 plug type (way more room for future upgrades). Think about making an adapter harness to make the swapping of wires a bit easier, and you're also no hacking into your own loom this way too. I just got an old burnt out ECU, salvaged the sockets, then got some loom plugs and started wiring the two together based on the pinouts I have. Fun times ;D

That was me that asked about that. Sure the plug fits ok, but if you're going to do this you will have to remove some of the pins from the unused 12 pin plug and add them to the missing pins on the other 3 plugs. Thats what I'm doing at the moment with my adaptor harness, so far so good.

Hopefully it is See if you can find a pinout for it and compare it Reubens GTB pinout. Just out of interest, what is the number on the casing?

I'd say the lack of boost means you havent got the factory boost control quite right, 4-5psi is the factory wastegate spring and the boost solenoid overrides this. I guess you could always use some other means of boost control ie bleed tap or EBC. I'm not familiar with the 3 plug ECU's on the later model EJ20H's, I've never even seen a pinout for one of these, you could be lucky and it might be the same as the 20R's in which case you can follow Reubens conversion thread and all will be well.

Like this one...

Haha, hope thats a good thing then

So would it be normal to have different bore sizes from the factory? My #1 was B, #2 A, #3 A and #4 B.

Thats very interesting about the bore sizes. I'm in the middle of a rebuild on an V2 STi engine. I noticed the A and B stamps and wondered what it meant, the pistons are also marked L & R meaning they are handed also? http://i635.photobucket.com/albums/uu74/leighosative/DSCF0007.jpg

I've got the 4 plug, standard issue on the early BD5a's with EJ20H as far as I'm aware. I've got a couple of BC5 RS ECU's and a 3 plug (V3/V4 WRX) to play around with. Going to make up a harness adapter to make things a bit easier. Koom also suggested to go the 3 plug if I can, bit better for expanding with mods in the future, I think hes right there. I'm using that pinout of yours for the TT ECU, thats the only one I can find (after many long hours of googling!!) How reliable is it?

Yea its perfectly drivable and the ECU handles boost control ok, its just that under load (like 4th or 5th up a long hill, with boost on) it will cut for a sec, CEL on and goes into safety boost mode. Codes that come up of course are 66 (no shit!) and 65 for the DPS. Its really annoying at first, but you quickly learn to change your driving style and work around it. Still, it sux arse though, hence why I'm converting to single turbo ECU!

Yea I know its not used on a factory single turbo : I was assuming he's just done what I've done and just done a 'mechanical only' twin turbo to single turbo conversion, in which case he will need to do something with it. Really the only solution is to go single turbo ECU.

Sounds like the differential pressure sensor, it tells the ECU the pressure difference between the two turbos. You must connect this for it to run. Cant remember which one it is (21 or 22) but its the pink striped one that needs to connect to positive pressure straight off your turbos compressor housing. The yellow one you can just leave vented to atomphere for now. It will run, but believe me it will throw CELs at you from time to time. Mines been like that for almost a year and I'm so sick of it I'm going to change to a single turbo ECU. I've done a diagram of how I've set mine up, do this and it will at least be drivable, but look into doing the ECU conversion, its the only way to fully solve all the issues of going single turbo with an EJ20H. http://i635.photobucket.com/albums/uu74/leighosative/BoostSensorControlDiagram.jpg

Although a version 2 STI ran the 380cc grey injectors and a TD05H, different tune in the ECU id imagine though, oh and forged pistons

Another question When stripping this engine (had ran a bearing) I found that #1's conrod is bent. As far as I can tell most people seem to think that all early EJ20G (STi or standard) have the same conrod, is this true? By the way if anyone has a spare rod just lying around.... :

Thanks for that guys, just needed to be sure.

Can someone help identify these pistons for me? They came out of an engine that was supposed to have been from a V2 STi. (had a red manifold and a TD05, but that doesnt mean much really). Are these just standard WRX pistons? http://i635.photobucket.com/albums/uu74/leighosative/DSCF0007.jpg http://i635.photobucket.com/albums/uu74/leighosative/DSCF0003.jpg http://i635.photobucket.com/albums/uu74/leighosative/DSCF0002.jpg

Thats great, thanks for that mate. Yes I am making an adapter right now, just sorting out what goes where etc. I figure if it all turns to crap and I get something wrong, I can always put it back the way it was. Auto electrical is not my most fluent subject ;D