Close

Results 1 to 22 of 22
  1. #1
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3


    1 out of 1 members liked this post. Yes Reputation No

    MFactory LSD review!

    I know a lot of people have been looking for, candid, feedback on these differentials, so here you go.
    I have a 2008 135i with a bolted diff for reference.
    The install was actually EXTREMELY easy, backlash on the new diff vs old was actually almost exactly the same. No trimming of the housing was required and the bearing races came right off the old and onto the new with ease.
    The pumpkin came without completely pulling the driveshaft, just dropped the axels and loosened the drive-shaft nut, out it came no problem. I also installed the purple powerflex bushings at the same time, this took longer than the entire diff install as my oem ones were pretty stuck in there and you can't use heat on the thin parts of the subframe. After awhile they came out with a small press setup.
    With the car back together I took it around the block a few times and can happily report no clunking going from reverse to drive, no whine, and a lot less drivetrain slop with the bushings. Traction wise in a straight line is hard to tell because i need some new rubber soon but the burnout test says that both wheels are turning Cornering now feels like I can use the skinny pedal to turn the car instead of it pushing the front until massive oversteer happens. I only have a few miles on it but I wanted to sing praise for a great, perfectly priced, high quality product. If anyone is going to put something through its paces it will be me I will be going to the track soon and will report back with long term results.

  2. #2
    Join Date
    Mar 2013
    Location
    Vancouver Canada
    Posts
    253
    Rep Points
    417.9
    Mentioned
    5 Post(s)
    Rep Power
    5


    1 out of 1 members liked this post. Yes Reputation No
    I don't know if I would be doing burnouts straight away... Typically 2000 mile light acceleration is best for break in.

    Glad you like it.

    edit: I'm not sure what the manufacturer states for break in but typically you want light driving for first 500 miles, let your diff cool completely after and before driving again, change your oil within 500-2000 miles etc. not trying to derail just trying to help. Don't want you damaging anything prematurely.
    Last edited by Wescuddles; 08-14-2014 at 10:23 AM.
    BSM 2008 135i N54
    -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip

  3. #3
    Join Date
    Feb 2010
    Location
    Miami Beach
    Posts
    1,094
    Rep Points
    513.1
    Mentioned
    10 Post(s)
    Rep Power
    6


    Yes Reputation No
    ^+1 for break in and after break in you should swap out the oil
    Click here to enlarge

  4. #4
    Join Date
    Jan 2013
    Location
    Toronto
    Posts
    267
    Rep Points
    327.4
    Mentioned
    13 Post(s)
    Rep Power
    4


    Yes Reputation No
    You will get whine and clunks once you install m3 subframe bushings. It's normal.

    I did my LSD first, no sounds whatsoever. Installed the M3 subframe bushings and now I hear the whine and clunks. Doesn't bother me at all.

  5. #5
    Join Date
    Nov 2012
    Posts
    2,098
    Rep Points
    2,488.2
    Mentioned
    156 Post(s)
    Rep Power
    25


    Yes Reputation No
    No break-in is needed on helical diffs. I beat mine straight away

  6. #6
    Join Date
    Mar 2013
    Location
    Vancouver Canada
    Posts
    253
    Rep Points
    417.9
    Mentioned
    5 Post(s)
    Rep Power
    5


    Yes Reputation No
    Click here to enlarge Originally Posted by jyamona Click here to enlarge
    No break-in is needed on helical diffs. I beat mine straight away
    Didn't realize thanks for the info
    BSM 2008 135i N54
    -VRSF 7" IC -VRSF DP's -n55 mids -BERK race -ER CP -TIAL BOV -BMS DCI -JB4 G5 ISO -ST coils -STOPTECH slotted rotors & pads -SLeK lip

  7. #7
    Join Date
    Oct 2013
    Location
    Clarkville, TN
    Posts
    121
    Rep Points
    121.3
    Mentioned
    7 Post(s)
    Rep Power
    2


    Yes Reputation No
    Were there any special tools needed for the install? Like the AR axle wrench?
    2007 335i MT E92
    JB4 G5 / BB Flash / Spec 2+ SMFW / AR DP / CPE FMIC
    BMS DCI / BMS OCC / RB PCV / Muffler Delete
    ST Coilovers / VMR VB3 / Nitto NT555

  8. #8
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by TVPhoto Click here to enlarge
    Were there any special tools needed for the install? Like the AR axle wrench?
    I used a 50 mm spanner with a half inch breaker bar, worked like a charm.

  9. #9
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by Wescuddles Click here to enlarge
    Didn't realize thanks for the info
    This is correct, i have the helical version, as i have had in other vehicle and no break in is required. If you go with a clutch style its a whole different ball game.

  10. #10
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by triggz Click here to enlarge
    You will get whine and clunks once you install m3 subframe bushings. It's normal.

    I did my LSD first, no sounds whatsoever. Installed the M3 subframe bushings and now I hear the whine and clunks. Doesn't bother me at all.
    I haven't noticed any noise or clunks what so ever. even with the poly bushings. I believe this is because the backlash is slightly tighter than the stock diff, was shocked at how well made the Mfactory diff is, at the price I was NOT expecting much lol..

  11. #11
    Join Date
    Jan 2013
    Location
    Toronto
    Posts
    267
    Rep Points
    327.4
    Mentioned
    13 Post(s)
    Rep Power
    4


    Yes Reputation No
    Click here to enlarge Originally Posted by TT-Tom Click here to enlarge
    I haven't noticed any noise or clunks what so ever. even with the poly bushings. I believe this is because the backlash is slightly tighter than the stock diff, was shocked at how well made the Mfactory diff is, at the price I was NOT expecting much lol..
    Are your poly bushings for the subframe or for the diff?

  12. #12
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by triggz Click here to enlarge
    Are your poly bushings for the subframe or for the diff?
    Poly for the diff, I'm installing solid aluminum mounts in the subframe tomorrow along with koni yellows and swift springs, h&r swaybar (rear), and all hd bushings/endlinks, with m3 control arms all around.

  13. #13
    Join Date
    Nov 2012
    Posts
    2,098
    Rep Points
    2,488.2
    Mentioned
    156 Post(s)
    Rep Power
    25


    Yes Reputation No
    Click here to enlarge Originally Posted by TT-Tom Click here to enlarge
    Poly for the diff, I'm installing solid aluminum mounts in the subframe tomorrow along with koni yellows and swift springs, h&r swaybar (rear), and all hd bushings/endlinks, with m3 control arms all around.
    oh boy, those billet subframe mounts are going to give you all sorts of crazy noises haha. just be ready

  14. #14
    Join Date
    May 2013
    Posts
    2,930
    Rep Points
    921.6
    Mentioned
    57 Post(s)
    Rep Power
    10


    Yes Reputation No
    Thanks for the review! Excited to get mine installed, been waiting to do it at the same time as the transmission swap.
    2009 335i coupe back to stock...for now

    Click here to enlarge

  15. #15
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by jyamona Click here to enlarge
    oh boy, those billet subframe mounts are going to give you all sorts of crazy noises haha. just be ready
    I'll let you know, I'm just sick of the slop, this should fix that lol. I'm prepared for some nvh increase, if its extreme I'll let everyone know but I honestly don't think itll be that bad. I couldn't find any actual reviews so bought them expecting them to be loud but I suppose we will see.

  16. #16
    Join Date
    Feb 2013
    Posts
    129
    Rep Points
    223.9
    Mentioned
    10 Post(s)
    Rep Power
    3



    Yes Reputation No
    Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
    Thanks for the review! Excited to get mine installed, been waiting to do it at the same time as the transmission swap.
    Pumped to see the results on you trans build, I've been lurking that thread lol.

  17. #17
    Join Date
    May 2014
    Location
    Manhattan, KS
    Posts
    207
    Rep Points
    244.8
    Mentioned
    0 Post(s)
    Rep Power
    3


    Yes Reputation No
    Click here to enlarge Originally Posted by jyamona Click here to enlarge
    oh boy, those billet subframe mounts are going to give you all sorts of crazy noises haha. just be ready
    Doubt there will even be any increased road feel, much less any noise. Many cars have solid mounted subframes, and the entire suspension is still further isolated by bushings.
    08' 135i - Cobb Custom E70, FBO, LSD, Suspension stuff... FOR SALE
    LSXOCET - 550hp LS3 @ 1600 lbs curb weight... being built
    (OLD) 11 Camaro SS - 10.20@135 naturally aspirated @630rwhp.

  18. #18
    Join Date
    Nov 2012
    Posts
    2,098
    Rep Points
    2,488.2
    Mentioned
    156 Post(s)
    Rep Power
    25


    Yes Reputation No
    Click here to enlarge Originally Posted by Dietcoke Click here to enlarge
    Doubt there will even be any increased road feel, much less any noise. Many cars have solid mounted subframes, and the entire suspension is still further isolated by bushings.
    I'll bet you on it Click here to enlarge

  19. #19
    Join Date
    Sep 2012
    Location
    Brisbane, Australia
    Posts
    3,311
    Rep Points
    1,439.5
    Mentioned
    54 Post(s)
    Rep Power
    15


    Yes Reputation No
    Click here to enlarge Originally Posted by Wescuddles Click here to enlarge
    I don't know if I would be doing burnouts straight away... Typically 2000 mile light acceleration is best for break in.

    Glad you like it.

    edit: I'm not sure what the manufacturer states for break in but typically you want light driving for first 500 miles, let your diff cool completely after and before driving again, change your oil within 500-2000 miles etc. not trying to derail just trying to help. Don't want you damaging anything prematurely.
    isn't break-in even on a clutched LSD pretty much something like.. do a bunch of figure 8's for like 15 minutes?.. and a maybe a little gentle driving for say 50-100 miles?
    boop

  20. #20
    Join Date
    Feb 2014
    Location
    San Dimas, CA
    Posts
    479
    Rep Points
    386.3
    Mentioned
    42 Post(s)
    Rep Power
    4


    Yes Reputation No
    Not for a Helical, no. That only applies to Plate type LSD's (the figure of 8's).

    With a Helical, just run it normally for 500 miles, then flush the fluid and you're good to go Click here to enlarge
    - MFactory Competition Products
    -- technik.teamMFactory.com --

    Got Questions? Read our Limited-slip Differential FAQ: http://www.bimmerboost.com/showthrea...fferential-FAQ

  21. #21
    Join Date
    Aug 2014
    Posts
    10
    Rep Points
    3.0
    Mentioned
    0 Post(s)
    Rep Power
    0


    1 out of 1 members liked this post. Yes Reputation No
    Glad to see another option on the market for LSD's.

  22. #22
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    119,478
    Rep Points
    32,154.9
    Mentioned
    2109 Post(s)
    Rep Power
    322


    Yes Reputation No
    Glad you're happy with it. I've yet to see anything bad regarding this diff.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •