how do i know what ecu i have

[91LaSerTurBo3]

well im just curious about what ecu is in my car, i have a 90, and i want to know if there is anyway i can tell if i have an eprom ecu or not

 

[Essential_DSM]

Open your ECU up and look at it. If it has the Below...... Than it's EPROM.

You must be logged in to view this image or video.

 

[93_tsi_fwd]

take out the ECU and look at the cover where the part number is, youll see the letter E on the bottom right corner of that sticker.

 

[91LaSerTurBo3]

is the ecu behind the stereo? in the center console?

 

[dsmmike50t]

Yup thats where it is. Just open it up and check.

 

[Old Mitsu Tech]

Good Job guys.

 

[Supa Dexta]

Take off the caps holding the panels to the center console, remove the screws under them. Pull out those panels, exposing the frame underneath. Theres also 2 small panels up under the foot wells more, with a screw and a plastic clip, remove passenger side one for sure. Now looking at the frame you'll find 4 10mm gold coloured bolts, 2 on each side. You'll also have to remove the cover under the passenger foot well, directly under the glove box.

MAKE SURE YOUR BATTERY IS UNPLUGGED

You should now be able to maneuver your ECU towards the passenger foot well, turn it enough to expose the wire connectors, there are 3. Unhook them, and continue to maneuver it out the passenger foot well.. From there you will find a part number on the case. MDXXXXXX something or other, there are a few sites that explain the differences in the numbers, that as well as a visual check will tell you what you have. To open the ECU there are 4 small black bolts 2 on each side of the cover.