N54Tech.com - International Turbo Racing Discussion
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BoostAddict BoostAddict is offline
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Default 10-01-2014, 10:33 AM

I think the photo (Installed) depicts the holes being much closer than they really are. I've tested on an '07 6mt, '08 6mt, '09 6at, and '11 DCT. I'm not really sure which years correspond to the different differentials. The only differences I've seen are some of the early cars have some plastics covering the subframe. The brace easily slides under it.

The area is much tighter than the photo you posted portrays.

EDIT: Just Went outside and looked under my car. Those holes are in a different spot. do you know what car that was a photo of?
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Last edited by BoostAddict; 10-01-2014 at 10:46 AM..
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BoostAddict BoostAddict is offline
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Default 10-01-2014, 10:49 AM

For the 135 guys, I'm pretty sure the fitment is the same as for 335i. I'm trying to find somebody local so I can confirm. I'll let you guys know when I'm 100%.


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(#28)
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Cloud9Blue Cloud9Blue is offline
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Default 10-01-2014, 10:59 AM

Looks like the kit should work with the either pumpkins if it fits on both 07 MT and 09 AT (mine is an 09 AT).

I took that picture from Rob's car (https://www.bmwcca.org/forum/index.p...down-diy.9869/), which is an 07 E90, so it might be an early model thing. I will confirm tonight and see where are the holes located on the later models (mine was built in Nov. 08 as a early MY09).

Btw, what was the built date on your car?


09 BMW E92 335i: EFR 7670 / Motiv / AP Racing / Wavetrac / TC Kline [Full Modlist]
07 BMW R1200S: Shine Yellow / Akrapovic / Ohlins
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BoostAddict BoostAddict is offline
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Default 10-01-2014, 11:07 AM

My car is a 10/07 build. The '07 I checked was a '06 build I believe, but was a 6mt e92.

I appreciate your help with this. I would have never known there was any difference. Hopefully we can isolate the models with the different holes. I certainly don't want anybody to have a surprise when they go to mount it.


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Default 10-01-2014, 05:35 PM

I'll update the first post with this info as well, but for anybody interested in ordering, please confirm that the subframe hole locations are in the same position as marked in red below.



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Cloud9Blue Cloud9Blue is offline
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Default 10-01-2014, 09:42 PM

Yeah, mine is at the same place as yours. There really isn't another part number for the rear subframe either, either. No idea why the holes are different on supposedly the same subframe.

A quick search on google image reveals some cars doesn't even have holes on the subframe.

Anyway, good kit nonetheless, will probably save me breaking an axle going over the stripped curbs on road courses. Any noticeable increase of NVH? Guess it doesn't really matter since you can just remove the brace after a track day anyway.
Will be placing an order once we get to see the installation video.


09 BMW E92 335i: EFR 7670 / Motiv / AP Racing / Wavetrac / TC Kline [Full Modlist]
07 BMW R1200S: Shine Yellow / Akrapovic / Ohlins

Last edited by Cloud9Blue; 10-01-2014 at 09:48 PM..
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Default 10-02-2014, 10:38 AM

Thanks, for checking. Luckily it seems that most cars that do have the holes, have them in the location I designed them for.

I didn't really notice an increase in NVH. That's coming from somebody super picky when it comes to mounts and NVH levels. It pretty much just feels like a tight suspension setup.


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Default 10-02-2014, 11:51 AM

Quote:
Originally Posted by Cloud9Blue
Will be placing an order once we get to see the installation video.
Look for the install video this weekend. Will be buying mine and making a video with boost addictions!!!
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Whosdady Whosdady is offline
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Default 10-02-2014, 02:01 PM

I would be interested if it worked with the vac machined LSD cover...
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davidwarren davidwarren is offline
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Default 10-02-2014, 02:02 PM

does this eliminate wheel hop?
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Default 10-02-2014, 07:03 PM

Quote:
Originally Posted by Cloud9Blue


See this image.
Lol! My pic


JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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robc1976 robc1976 is offline
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Default 10-02-2014, 07:04 PM

Quote:
Originally Posted by Whosdady
I would be interested if it worked with the vac machined LSD cover...
I was just about to text you!


JB4 G5, WEDGE flash, 455 LPFP, HFS-4 meth kit, BMS OCC, VM 6466 ST, RB valve, BMS DCI, 3" AR ***, Custom OC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2 exhaust DEFIV kit, KW clubsort, Delrin solid subfrane bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, MORR VS8.2 rims 245/295
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(#38)
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Nugs Nugs is offline
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Default 10-03-2014, 12:18 AM

Great idea, much better price and simpler installation than the DEFIV kit.
Looks like it will work with DCT 135i.
This is my subframe
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(#39)
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BoostAddict BoostAddict is offline
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Default 10-03-2014, 07:46 AM

Quote:
Originally Posted by Whosdady
I would be interested if it worked with the vac machined LSD cover...
Unfortunately it won't. The heat sinks are in the way.

Quote:
Originally Posted by davidwarren
does this eliminate wheel hop?
Yes 99% of the time. IRS just inherently likes to hop due to it's design. This is the simplest solution without getting crazy and designing a lower control similar to what would see on a Mustang.

Quote:
Originally Posted by Nugs
Great idea, much better price and simpler installation than the DEFIV kit.
Looks like it will work with DCT 135i.
This is my subframe
Sweet!


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Bme30 Bme30 is offline
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Default 10-03-2014, 12:50 PM

http://youtu.be/P1Kwq3p7OzI
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Default 10-03-2014, 12:51 PM

Install video posted!!
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Cloud9Blue Cloud9Blue is offline
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Default 10-03-2014, 01:30 PM

Sweet, probably gonna be easiest thing to install out of all the things I have done to the damn car over the year. Order placed!


09 BMW E92 335i: EFR 7670 / Motiv / AP Racing / Wavetrac / TC Kline [Full Modlist]
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(#43)
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BoostAddict BoostAddict is offline
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Default 10-03-2014, 02:27 PM

Quote:
Originally Posted by Cloud9Blue
Sweet, probably gonna be easiest thing to install out of all the things I have done to the damn car over the year. Order placed!
Thanks for the Order! Let me know if you have any questions. Just be patient lining up the whole on the bottom of the diff. At first it may seem like they don't lie up, but the will. Start the driver side diff cover bolt first. Seems to seat better that way.


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Default 10-03-2014, 02:35 PM

In regards to the diff holes. I had to 07's come today, one being BME30. The holes were in the alternate location on both vehicles. I'm gonna say this is a '07 thing. The good news is the subframe is easy to drill through. I used a 1/2" bit for the holes. It took barely any time to get the holes lined up, and drilled. you can see the holes in the first pic.

Also big shout out to BME30 for helping me out with the video.
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BoostAddict BoostAddict is offline
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Default 10-05-2014, 06:02 PM

2 braces were sent out to 135i owners, so we should have feedback soon.

Also, I signed up for a track day thursday, so I'll have feed back from how the brace is on a road course.


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Stucks Stucks is offline
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Default 10-06-2014, 05:14 AM

Are these still available? I have feb 08 build 6at 335i.


Current: 2008 e92 335i coupe.

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(#47)
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goldfz8 goldfz8 is offline
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Default 10-06-2014, 09:57 AM

Should be getting mine today . and ill be hitting up the track in two weeks reviews coming!!!

BMW 135
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BoostAddict BoostAddict is offline
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Default 10-06-2014, 11:45 AM

Quote:
Originally Posted by Stucks
Are these still available? I have feb 08 build 6at 335i.
Yes, I have 4 left of this first batch. Sending you a pm as well.

Quote:
Originally Posted by goldfz8
Should be getting mine today . and ill be hitting up the track in two weeks reviews coming!!!

BMW 135
Can't Wait!


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(#49)
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Default 10-06-2014, 01:08 PM

So just an update. After we made the video for boost addictions video for the diff brace we finally got around to fitting one on my car. Again I cannot stress how simple this install is!!! It took about 12 minutes from start to finish and that was from getting the car onto and of the ramps.
Initial driving impressions: The car absolutely drives so much better, the car actually feels like it has a proper LSD. The ride has been transformed for the better. The rear end doesn't feel as squishy......the lack of slop makes this car feel like it should have been from factory.
It reminds me of my old e30 days with my 410 limited slip, but with about 400 more hp This product is one of the best mods to date especially with all the added Hp.

here is a pic installed.
disclaimer********(just to be clear this is the temple/original brace that came off BuraQ's car as he wanted a new one because he is a snop lol !!! This is not the product that will be received. The shipped product will have an expoy coating and will be more finished and refined. Same overall outcome, just a more refined finished product!!)
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Last edited by Bme30; 10-06-2014 at 01:20 PM..
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(#50)
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Cloud9Blue Cloud9Blue is offline
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Default 10-06-2014, 07:26 PM

Got mine today, quick shipping I have to say

Two small issues with mine. First off, my diff housing (the black painted part) has a casting seam running in the middle, so that is preventing the brace from seating correctly and aligning with the diff bolts. That seam needs to be grinded off. Have to get a shop to do that since I don't have grinder nor planning to run a grinder 5 inches away from my face.

Also, it seems like my diff sits a bit higher than the brace was designed. If the top of the brace has to sit flush against the subframe, the opening for attaching the diff cover is about 1/4 lower than it needs to be. Played around with aligning the thing, but can't seem to figure it out. Not sure how you guys did it or it is just my car.


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