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I would say it isn't chipped. It could be, but if it is, then it has been done in a most unusual way. When you chip these ECUs, you desolder the EPROM (it's the rectangular chip in the top right corner of your photo) and solder in a socket. Then you can put chips in or pull them out without risking more soldering on the board. You can see on this board that the chip is soldered directly with no socket. Now, it's perfectly possible to do that, just unusual.

Having said the above, if I were a Blitz or a Mines and I didn't want people to be able to steal my "tunes" so easily, then I would solder the chips in direct. Make people work to get hold of the info in them.

Now, having said that, the sticker on the EPROM looks like the original part number. The sticker on the lid of RB26 ECUs (and others of the same era ) has codes like MEC-R580. Yours has MEC-R280. I'm not aware of the difference, but regardless, it looks like a Nissan chip.

FWIW, I wouldn't run any engine on any stock ECU with a Jap tuning house chip in it. The Mines ones are all time bombs. Blitz can hardly be any better.

this is what a chipped ecu looks like with the chip removed.

there is a socket put in its place and then the chip goes into the socket.

that ecu you have has not been socketed, the eprom is directly fitted to the board.

post-1240-0-10113600-1392095446_thumb.jpg

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