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Old 11-08-2010, 09:58 PM   #1
e30sam
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question about. ecu

Hi.
New to the bmw seen.
Question. Was there an ecu change in Oct 87?
My car is a 325E. Oct.87. I would like to buy a perfamance chip. Im not sure which ecu I have?? How many prongs are comming off the chip.
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Old 11-08-2010, 11:47 PM   #2
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Quote:
Originally Posted by e30sam View Post
Hi.
New to the bmw seen.
Question. Was there an ecu change in Oct 87?
My car is a 325E. Oct.87. I would like to buy a perfamance chip. Im not sure which ecu I have?? How many prongs are comming off the chip.
9/84- 9/87 DME# 0-261-200-027 You can verify this via the label on top of the DME cover

The chip is a 28pin
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Old 11-09-2010, 01:28 AM   #3
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Quote:
Originally Posted by e30sam View Post
Hi.
New to the bmw seen.
Question. Was there an ecu change in Oct 87?
My car is a 325E. Oct.87. I would like to buy a perfamance chip. Im not sure which ecu I have?? How many prongs are comming off the chip.
There was more then a ECU change in 87...That was the year the 325i came out, also 88 was the year of the super ETA that had its own ecu...So what you need is chip for the 2.7ETA motor...It is well worth it, as you get some good hp and torque #'s...
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Old 11-09-2010, 03:22 AM   #4
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Quote:
Originally Posted by e30sam View Post
Hi.
New to the bmw seen.
Question. Was there an ecu change in Oct 87?
My car is a 325E. Oct.87. I would like to buy a perfamance chip. Im not sure which ecu I have?? How many prongs are comming off the chip.
Unless you have a late version 0 261 200 027 which is very rare, you need a 24 pin chip.

There is an early version of "027" ECU which is in most eta's and that is what you may find in there. Since the cars are so old, the original ECU could have been swapped out so it's best to check yours by opening it up and checking what chip is actually in there.
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Old 11-09-2010, 03:30 AM   #5
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Unless you have a late version 0 261 200 027 which is very rare, you need a 24 pin chip.

There is an early version of "027" ECU which is in most eta's and that is what you may find in there. Since the cars are so old, the original ECU could have been swapped out so it's best to check yours by opening it up and checking what chip is actually in there.

I have never seen the "027" dme version myself, but I heard those chips are soldered in are they not?
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Old 11-09-2010, 03:36 AM   #6
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I have never seen the "027" dme version myself, but I heard those chips are soldered in are they not?
No they are not soldered in, they are in a socket.

I first developed a performance application for that car and ECU in 1989 or 1990, it uses the RCA 1802 processor which I used for a product I developed in 1979, so I easily dis-assembled that one by hand.
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Old 11-09-2010, 03:59 AM   #7
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Its probably a DME#0261200173 M1.3 in his car anyway... looks like they switched after September
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Old 11-09-2010, 04:01 AM   #8
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Its probably a DME#0261200173 M1.3 in his car anyway... looks like they switched after September
Not if he has a 325E, unless he had a motor swap done also!

They had a super ETA motor which used a DME ending in 154 in some 1988 cars


Last edited by MarkD; 11-09-2010 at 04:03 AM.
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Old 11-09-2010, 04:14 AM   #9
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every where I look the DME# 0-261-200-027 is listed 9/84- 9/87 so what's going on between 10/87 - 88? Something must have changed or maybe not?

quote taken from wiki

"In cars produced from September 1987, the eta engine got a substantial refresh from the factory. This included the more recent Bosch Motronic version 1.1/1.3"

Could be wrong I guess

Last edited by bmwconnect; 11-09-2010 at 06:02 AM.
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Old 11-09-2010, 09:54 AM   #10
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every where I look the DME# 0-261-200-027 is listed 9/84- 9/87 so what's going on between 10/87 - 88? Something must have changed or maybe not?

quote taken from wiki

"In cars produced from September 1987, the eta engine got a substantial refresh from the factory. This included the more recent Bosch Motronic version 1.1/1.3"

Could be wrong I guess
If you just read whatever you can find written by other on the internet, your knowledge won't rise above the general population. For model year 1988, the eta became the super-eta and used the 154 DME, and 325i which had the 153 DME got the 173 DME. I was repairing and reverse engineering BMW DME's back then so I remember.
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Old 11-09-2010, 11:35 AM   #11
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simply all I want to know is if they continue on with the 0-261-200-027 after 9/87 for the 325e

Last edited by bmwconnect; 11-09-2010 at 11:39 AM.
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Old 11-10-2010, 07:28 PM   #12
e30sam
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Thanks for the input Fella's. I will remove the glove box and check it on the weekend. Wow... Im Pretty suprised with all the differences in an E30.
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Old 11-10-2010, 07:45 PM   #13
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Thanks for the input Fella's. I will remove the glove box and check it on the weekend. Wow... Im Pretty suprised with all the differences in an E30.
Np! If you have a camera and can take a photo of the dme internals with the cover off, I would love to add this unit to my DME photo database

Cheers
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