i have a 89 325i touring and recently thought of changing the chip to a EcoTorq M20B25 Mild bought it from a guy here in e30 and today i tried to change it and find out that my ecu is a different and can't change the chip
is it me not knowing what i should do or is it actually the ecu
i checked many videos and followed the all instruction from what i see is my ecu is a smaller.
any way i took couple of pictures , here they are,,,,
what i should do now ? , is this is a good ecu or is it better to change this to a different ecu,
please help
thanx
J

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