G GSanchez1370 Member : Mazda 3s Mar 20, 2015 #1 I think I might need to replace the ECU in my 2007 Mazda 3. If I buy a used one would I still need to have it programmed by a dealer? Or is it a plug-n-pay kind of thing?
I think I might need to replace the ECU in my 2007 Mazda 3. If I buy a used one would I still need to have it programmed by a dealer? Or is it a plug-n-pay kind of thing?