[katerih95]

New to the forums things, so cut me some slack here! I am considering an N54 swap into my 2011 328i e91 since the N54 version is not available in US.

I have a few questions before I even endeavor into acquiring a donor car or sourcing parts.

I have a GM 6-speed automatic; wondering if this transmission would work for the time being until a manual swap happens, or if manual swap needs to happen with the motor swap.

Also wondering about the wiring situation, what is the conversion process on the wiring/electrical from an N54 (likely out of a 335i) into the e91 wagon, and is it likely a pain in the ass? Wiring harness and DME conversion? I have heard mixed things.

Any answers, advice, or links to other threads appreciated!

[Motopro292]

Originally Posted by katerih95

New to the forums things, so cut me some slack here! I am considering an N54 swap into my 2011 328i e91 since the N54 version is not available in US.

I have a few questions before I even endeavor into acquiring a donor car or sourcing parts.

I have a GM 6-speed automatic; wondering if this transmission would work for the time being until a manual swap happens, or if manual swap needs to happen with the motor swap.

Also wondering about the wiring situation, what is the conversion process on the wiring/electrical from an N54 (likely out of a 335i) into the e91 wagon, and is it likely a pain in the ass? Wiring harness and DME conversion? I have heard mixed things.

Any answers, advice, or links to other threads appreciated!

Buy a complete donor. No, the GM transmission won't work.

[marvinstockman]

Might be easier to buy a working 335 for when you have the need for speed.

[katerih95]

Motopro292 That’s what I thought on the transmission. Do you know anything about the wiring harnesses, though? I hear there are differences between sedan and wagon. Wondering if I could just hope to hunt down the harness from a Euro wagon with the N54 in it... �� if no luck, wondering what it would take to convert to wagon.

[katerih95]

Originally Posted by marvinstockman

Might be easier to buy a working 335 for when you have the need for speed.

Need the wagon life WITH the need for speed, though. It’s currently my daily driver, but I will need to go even bigger eventually, so this swap may be my “need for speed” project.