RomRaider

Since they are both 16bit pcms, would it be possible to run the wrx pcm by placing the trigger subroutine and ignition/injection I/O's into the wrx's rom? Form the wiring diagrams it looks like they both have only 1 cam and 1 crank postion sensor. Here is the waveform from the EZ30D:
Then one would only have to run the extra wiring 2 cyl's outputs for injectors and coils.
Obviosly there will be differnces at the junction block connectors but nothing to difficult to re-pin.
Im very good with electronics, but very poor at programming so bear with me here. I'm looking for the cleanest, most factory like way of dropping the EZ30D into the spot where the EJ20 went.
Hopefully the end result being a nice manual for us all to use for re-pinning and mechanically dropping the engine in place (provided by me), and a hacked ROM posted on this site that we can download and flash into the wrx pcm(provided by someone who could pull it off).
Then we could keep Boost control, factory dash, emissions control devices,etc (cough, forcepass,cough) in place and satisfying most states requirements when it comes to inspection.

It would be a much more common swap if it were not for this hurdle.

well I have the 32 bit pcm (2005) service manuals in front of me and the PCM's are physically the same. There are just 4 more outputs used for the 6cyl. So assuming the 16bit pcm (2001-2004) is the same situation this may be a reality for us all.

Now we need someone who understands the code to see what could be done to make the turbo rom run 2 more cyl's.

Anyone? Merchgod? This seems to be in your realm of capabilities. Id be willing to pay you for your time!

I just downloaded the pinouts for a Ez30D from an outback LLbean, other then connector B84 (the tumble valve generator connector) it is physically the same PCM. I will compare all of the I/O's next and see what will need to be repinned.

Okay 95% of the I/O's are identical..

here is a list of the differences 02 WRX vs / H6

Sensor ground for the ECT is B135 -19 / torque control signal

There is no Maf, EGT or tumble valve stuff.

wastegate solenoid B137-24 / Fan relay 3

The H6 has 1 more knock sensor located at B135-13

ignition control is identical, with cyl 5 and 6 located at B136 -20 and -19 respectivly

Fuel injector control is identical with cyl 5 and 6 located at B137 -3 and -1 respectivly

There is no fuel pump controller on the H6, but the pinout is the same just going to a relay instead

Fuel pressure sensor ground is locats at B134 -15 on the H6 instead of -19 on the wrx

pressure sensor power supply and ground are in differnent locations, but signal is the same

power steering pressure sensor is B135-24 on WRX/B137-24 on H6

Front O2 + and - are reversed on B137-19 and B137-29 (could be typo)

sensor ground is B135-19 wrx / B134-15 H6

This will be extremely complex and time consuming.

We would have to be sure the outputs will work, ie: does the wrx ecu have the hardware to trigger 6 coilpacks, and 2 pw outputs for injectors? Then determine which outputs could be used as such or copy the code to do so if necessary. Then re-map the unused outputs, and modify & insert the 6cyl fuel and timing code.

Does that 6cyl ecu use a 7055 or 7058 cpu?

I am unsure which processor the H6 uses, I dont have one to look at yet.
I will pull the cover off and try to determine if the WRX board is populated with drivers for the extra 2 cyl's. The easiest path (I beleive) is to keep the wrx pcm and code, populate the board if nessicary for the extra 2 drivers. Possibly keep the EJ20 engine harness and just add the 2 extra injector/ignition control sections would be the path of least resistance.

As far as putting the H6 trigger decoding and output assignments, that part is over my head.
Im good wiht electronics, but not programming.

Im willing to do my part on the mechanical and wiring harness end. I will provide detailed instructions on how to do the conversion. But I am incapable of writing a ROMhack to make the wrx pcm run 2 more holes.

Back from the dead, I have decided to go ahead and give the EZ30D a whirl this time around.
Id still like to build a sticky on wiring/mechanical needs nessicary for an H6 swap in the WRX. However the programming side is still a hurdle. I can run it on Megasquirt without issues, so as far as getting it runnign driving it's a non-issue. Inspection time will be the trouble...

either we'll need a Ez30D definition file with forcepass and access to trans/codes so a standalone can piggyback, yet keep oBD2 complaint

Or

The original plan of repinning the harness/ rewriting the Ej205 ecm to run the H6.

Anyone interested in being a part of this?

I would be willing to throw down some $$ to the person capable of getting me inside the ez30D/ rewiting the EJ20T

I have a few EZ30 3D tables defined for a lot of the H6 ROM's as I have been following the H6's development due to a project I am working on

I think it would be a lot easier to wire in an ECU from a car that came with an EZ30D ECU. That way, whatever problems you run into can be solved with wires that are big enough to connect and reconnect with your bare hands. I mean, as opposed to circuits in the CPU that are too small to see, and software that's only barely visible with hours and hours of study.

Let's start with what we know about the 16bit EZ30D (attached).

Would anybody mind taking a look at that and giving me some feedback?

I've been slowly building some defs for an EZ30D. It appears to use an Alpha-N type fueling setup. The defs are purely experimental though I have managed to delete some CEL's, set up launch control, and smooth out some driveability issues in my buddy's swap with them. If anyone needs them to get a car running let me know. I'm not posting them publicly until they are a bit more tested and complete though.

Andy

any headway on the ez30d stuff?

Any updates on this?