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DISCUSSION => Engine management => Topic started by: bme30 on November 30, 2008, 07:47:51 AM

Title: ECM swap question
Post by: bme30 on November 30, 2008, 07:47:51 AM

it was recently mentioned to me that i could swap out the ECM from a M44 and use it for my M42.  Because the M44 ECM is more advanced it can read and calculate the engine info faster therefore having a more efficiant M42 motor.

Has anyone heard of this or tried it?  I tried a search but no luck.


Thoughts?

Title: ECM swap question
Post by: tjts1 on November 30, 2008, 09:09:15 AM

No it doesn't work like that. You would also have to swap over the whole wiring harness to the engine and sensors. The M42 and M44 have very different engine management systems.

Title: ECM swap question
Post by: bme30 on November 30, 2008, 04:54:50 PM

so it sounds like i might as well just swap over the entire m44 with harness and ecm.. only after my m42 goes.

thanks

Title: ECM swap question
Post by: ajatya2 on November 30, 2008, 08:59:56 PM

yea m42 OBD-I, M44 OBD-II it would be a pain to swap the harness and i personaly dont think that it would acomplish much because OBD-II is a pain to tune and to get the best power out of bolt on parts your gona have to flash the ECU