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Thanks for the comprehensive answer, and explanation. Do you, or anyone else here, have any specific information about the M73 ECUs (DME, EML, EGS) installed on the BMW limited production 1995-1999 E31 850 M73 engines? I have also read that the later version of the same engine, the M73TU...

I was reading your page at https://www.torquecars.com/bmw/m70-tuning.php Great web page, lots of useful information! In it, you say: "Remaps should help to unlock the full potential of all the mods you've done to your M70. (In some cases, as the factory ECU is locked flashing is not an...