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[Josh Assing]

I have 92 e32/m30 735i

I put a chip in & wanted to be able to switch back to "normal" mode easily (swap
ECU/DME boxes -- vs pulling the chip each time) for available gas.

Anyway; I picked up an module with the same bosch # -- but the bar codes are
different.

When I put it in; the car started, idled fine -- but soon said "TRANS PROGRAM"
on the dash.

I shut it off; but my chip'd one in & all is fine.

My question is -- how different are these ECU's? If I Put my original chip in
this ecu - will it work? is it the CHIP that controls this box more than the
other bits that make it up?

If swapping the chip will resolve it -- the question begs, how can chips be made
"generically" for manual & auto tranny's?

Thanks
-josh



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[Kyle and Lori Greene]

The 2nd ECU box is probably set up for a different transmission than your
original. On a car with an auto tranny, the ECU looks for the EGS
(transmission computer) and if it doesn't see it, throws the TRANS PROGRAM
fault.

Kyle.
98 740iL
01 525i

[Blake Dodson]

It would stand to reason the logic for the auto resides in the chip.
Swapping it should solve things.

Blake

[Josh Assing]

[Josh Assing]

[Blake Dodson]

Is there a jumper or a shunt? Strange that the controller would have
the same part#.

Blake

[Josh Assing]

Same BOSCH part # -- not the same #'s everywhere else....
Dont' recall a jumper or DIP switch or similar..