Power trains

[Alvin323]

Is the power train the same in a 2014 320 and 328 other than the difference in the engine power?
Thanks

[justinca540i]

Yep both use N20B20 engine

[328 Power 04]

Non forged pistons in the 320i and difference in software in the engine control module.

It can be converted to 328i software, I've done a few, but it's not simple at all. It has some heavy protection against it.

[Alvin323]

Thanks guys.

To be 100 % diff, transmission and 4 wheel drive system are all the same?

[328 Power 04]

Hardware, maybe yes. Software is different between the two in transmission and transfer case.


We need more exact info on each car... the differentials may have different gear ratios.

[Alvin323]

Thanks,

I am not too concerned with the software or gear ratios.
My worry is mainly the diff. My 323 is a Canadian only model and it uses a smaller weaker diff than a 328 of the same year which make it likely to fail at a lower mileage.
I don't want to be in the same position if I get a 320.

[328 Power 04]

Try https://www.realoem.com/bmw/enUS/select
parts system. It will give you which models the differential and things were used on. For USA models, the 320i and 328i used the same exact differentials.

[Alvin323]

Great site, Thanks for all the info.

[White94RX]

Thanks,

I am not too concerned with the software or gear ratios.
My worry is mainly the diff. My 323 is a Canadian only model and it uses a smaller weaker diff than a 328 of the same year which make it likely to fail at a lower mileage.
I don't want to be in the same position if I get a 320.

The rear differential is the last thing you need to worry about with a modern day BMW. The diff is probably the least likely thing that will ever break in an F30.