Vg30dett ecu

[brentjj]

I recently picked up a jdm vg30dett. I opened up the ecu and found no eprom in there so I am guessing this is a 16bit ecu (newer engine?). There is also no secondary board in the ecu that is connected to the main board by a ribbon strip. The engine has run off of this ecu in the past, or so I have been told but the ecu looks to have once had "n/a" written on it in sharpie but it has been worn off too much to clearly read it.

I was just wondering if any one knows if there are any distinguishable differences between the tt and n/a ecu?

Thanks for your time, Brent.