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+---- Thread: F32 440ix M Performance diff - Retrofit (/showthread.php?tid=89760)
F32 440ix M Performance diff - Retrofit - Rolzs - 06-03-2024
Hello,
US BMW's have cool retrofit for 240i like M Performance limited-slip diff ( 33108659989 ). I just wonering - realoem say's this fits F20-32-36 series.
Maybe someone have such experiance does it bolts on to F32 LCI B58 Manual.
RE: F32 440ix M Performance diff - Retrofit - The CaT - 06-03-2024
Had this on eight-speed 335i F30. Worked perfectly.
RE: F32 440ix M Performance diff - Retrofit - Rolzs - 06-03-2024
(06-03-2024, 10:08 AM)The CaT Wrote: Had this on eight-speed 335i F30. Worked perfectly.
Did you made any coding, VO, software changes on DSC unit for to tell car you have LSD?
RE: F32 440ix M Performance diff - Retrofit - shaggyshadow - 06-03-2024
Isn't quaife custom cheaper ?
RE: F32 440ix M Performance diff - Retrofit - The CaT - 06-03-2024
(06-03-2024, 11:23 AM)Rolzs Wrote:Nope, nothing. Moreover, I tried to code ICM in similar with Alpina manner (the only non-M BMW with LSD at the moment). It didn't work.(06-03-2024, 10:08 AM)The CaT Wrote: Had this on eight-speed 335i F30. Worked perfectly.
Did you made any coding, VO, software changes on DSC unit for to tell car you have LSD?
(06-03-2024, 17:05 PM)shaggyshadow Wrote: Isn't quaife custom cheaper ?
The M-performance LSD, in fact, is plated Drexler.
RE: F32 440ix M Performance diff - Retrofit - Rolzs - 08-03-2024
Guys but question still remains.
Does M-Performance diff- is plug n play on F32-B58-Manual?
Does M-Performance diff - requires coding, change VO, flash DSC
RE: F32 440ix M Performance diff - Retrofit - Node - 08-03-2024
AFAIK no coding necessary, but for manual you need DIFFERENT PART NUMBER which is no longer supplied by BMW (official status: "omitted"). If you can still find it somewhere, part number is 33108659988. This has transfer ratio of 3.23 which is the SAME as normal one. Part number you specified in original post is for AUTOMATIC gear boxes and has the ratio of 2.81 and that is still supplied.
Procedure is simple: remove old one, install new one.
UPDATE: Both these are for pre-LCIs, but normal diff on F32 B58 manual LCI is the same part number as pre-LCI, so limited slip one could also fit.