Requesting Help Identifying This Chipped Ecu

[t3hWIT]

I purchased a full WRX RA drivetrain from an importer here in the US. The seller thought that the ECU was chipped, and Squiggle agreed. After pulling the plugs, I'm concerned about who manufactured the chip and what kind of map they're running. We didn't get the WRX until the GD chassis so, save for a few Hyper Rev magazines (in Japanese), I have little to nothing for reference to find the manufacturer. This is where I was hoping you guys could help.

I was going through the Impreza Owners Bible Vol 2, and the only picture I find of the ECU also suggests that I have an extra chip or two or three soldered to the board.

There aren't any logos except for Jecs and Mitsubishi Electronics, so identifying the company who chipped it might be impossible. I was hoping you guys could provide some insight though. Note the case. The tape is the same type used by the yard in Japan who sealed off the motor before shipment. I'm not sure where they got the 275ps from, and this is not an STi ECU. The katakana reads "ma nu" suggesting that they're referencing the fact that the ECU was from a manual vehicle (to aid in identification when the container arrived in the US).

Cracking open the case reveals the following dark green computer board:

The first chip not shown in the Owners Bible simply has a paper decal on it.

Turning over the board shows a few blue dots that aren't located anywhere else on the underside of the board.

Also on the board is a brighter green chip. This looks much newer than the other components.

Lastly, we have one more chip right next to the plug.

I have a few other issues I'll ask about a bit later (including the plumbing for the boost solenoid), but here you can see why I'm concerned about running this ECU.

Any info you guys can provide is appreciated. Many thanks.

[sti pretender]

Might be worth contacting a couple of mappers to see if they have hear of or seen this before.

An email to AndyF would be my first port being a tuning Guru.

[Joe G]

Get on the blower to Andy F. He will soon point you in the right direction

[t3hWIT]

Thanks you both, p m sent.

Edited April 28, 2010 by t3hWIT

[t3hWIT]

Shameless bump for any info.

[the squiggle]

where did the ecu come from....uk, japan, other?

[t3hWIT]

where did the ecu come from....uk, japan, other?

It's originally from Japan. That makes things more difficult, but I don't have any resources here to try to determine who tuned it.