Witch wiring harness

[logger]

With a m52 swap ( into a 91 318is ) can I use a m50 wiring harness or do I have to use the m52 wiring harness ?

[SpecM]

Witch?

Goblins, wizards and dragons too?

[rThor432]

Either one will work. Depends on whether you want to go OBD1 or stay OBD2.

[logger]

Either one will work. Depends on whether you want to go OBD1 or stay OBD2.

So If I go OBD1 I can use the m50 wiring harness and ecu right ?

[mongule]

If you go OBD1, you should use the m50 harness and Ecu,

And if you go OBD2 you keep the m52 harness and ecu.

[dpgrand]

you'll need more than the ecu to stay OBD2, unless you delete the EWS.

[Mohammed_A]

Sorry for the ignorance but does the obd1 have ews or is it only obd2

[gobuffs]

Sorry for the ignorance but does the obd1 have ews or is it only obd2

Some OBDI engines have EWS (build date on or after 1/95 will have EWS).

FYI, the S50 B32 is not OBDII.

[Mohammed_A]

Some OBDI engines have EWS (build date on or after 1/95 will have EWS).

FYI, the S50 B32 is not OBDII.

how do i know if i have the s50 or s52?

[gobuffs]

The S52 is a US only motor.

[Mohammed_A]

The S52 is a US only motor.

in that case, mine is a s50b32.... thanks for clearing that up... what i do know that it does have ews

[gobuffs]

in that case, mine is a s50b32.... thanks for clearing that up... what i do know that it does have ews

Yes I told you you had a S50B32 in another thread. I would have assumed that you knew that all S50B32s were built after 1/95, therefore all S50B32s have EWS.