BOSCH Motronic ECU part numbers are 10 digits long and begin with 026.... This we know. Starting with EPROM of 32k in size [27256], BOSCH began putting ECU part numbers and the programmed EPROM part numbers into the code.

Even with Notepad or WordPad, a simple search for "026" (1st three digits of the part number) will find the ECU identification within the EPROM's code.


Using a hex editor, 010Editor, and searching for "026", I get this.
	99361812301 0261203163 1267358138 Porsche ECU No. BOSCH ECU No. Chip Part No.

Reverse Order Searches
Some auto makers have their part numbers in reverse order . This is a BMW 325i. Search for "620".
	Reverse Order 3710021620

Reverse order search for Alfa Romeo , BMW, Ferrari, Opel, Peugeot, and others.

If "026" does not find it, try "620"

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