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Old 10-26-2012, 12:47 AM   #1
Registered User
Join Date: Oct 2012
Location: Marietta, GA
Posts: 25
My Ride: Honda Accord
different ECU types?

Hey guys, how difficult would it be to swap out the m52 engine from a 2002 325ci and put in a m54b30? i heard the ecu is slightly different? i know the m54 used two different software systems, ms43 and ms45, but how do i know which is in the 325ci? and if it is different than the 330 m54b30 engine, how do i change the software? are there extra o2 sensors or what?
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