DefiV Diff Lockdown Kit

joec500 · 02-01-2013, 08:08 PM

First of all I want to thank Rick for building a super high quality kit and for FFTEC for a quality and quick install, Dave really knows how to turn a wrench.

As many people have seen on the forums, wheelhop has been destroying driveshafts and halfshafts. I actually shattered a halfshaft from wheelhop, so I looked into DSS reenforced units, but I preferred solving the root problem, which was wheel hop caused by our super soft diff bushings creating way too much play in the driveline. I have high hopes that this will save our drivelines from Wheelhop.

I went into FFTEC today, who were able to install the bushings without dropping the subframe. Other shops may request to drop your subframe, but it is not needed.

After a few hours I was on my way, and I noticed immediately how the rear was much more planted. Before at WOT my car would shimmy to one side or another, but after the kit was installed the car just plants and runs solid and straight. The original diff bushings can actually be squeezed by hand, that is how much play there is. Which is terrible for a 400+ WHP car.

Also on the freeway when I downshift, the car no longer shifts to one side before pulling forward, it just sticks and goes.

This kit is essential for any modded N54 car and to save your driveline also this kit did not induce any additional Noise Vibration or Harshness. It's pretty isolated with our subframe bushings.

Also Rick offerred incredible support throughout the process. Here are some pics of the kit and installation.

boostaholic786 · 02-01-2013, 09:32 PM

Where did you get it from if you dont mind me asking? Im very curious as to how MUCH different it will make the car feel under WOT and even driving around town... If you could let me know that would be much appreciated

Black Sheep · 02-01-2013, 09:55 PM

Can't wait to install mine, I broke a shaft last year

joec500 · 02-02-2013, 12:05 AM

Quote:

Originally Posted by boostaholic786

Where did you get it from if you dont mind me asking? Im very curious as to how MUCH different it will make the car feel under WOT and even driving around town... If you could let me know that would be much appreciated

http://www.defivfabrication.com/

IMO with my LSD and full E85, it makes a huge difference. Just driving around town, the rear feels so much more solid. The stock diff bushings are a joke, you can literally squeeze them with your hands, having that much play might be great for a stock car being driven like a grandma, but not for a modded car that's being driven as it's intended to be driven.

boostaholic786 · 02-02-2013, 07:24 AM

See I thought getting an LSD would help out/and or eliminate wheel hop in general but it didnt and I cant freaking stand it. I hardly ever really launch my car but even on the highway you described exactly what I'm going thru and how the car feels!! This is exactly what I want and especially after seeing your comments about it and seeing there video!!!! I'm SOOOOO EXCITED!!!

GOTMH8N · 02-02-2013, 07:58 AM

Wow that's pretty cool. How much is a kit like that

3-Serious · 02-02-2013, 10:28 AM

Interesting, also curious about the price?

joec500 · 02-02-2013, 12:11 PM

It's not Cheap, I think the standard price is $699, but Rick might be doing specials, the best thing to do is reach out to him from his website.

But considering replacing a halfshaft cost me over $800 (parts and labor), it's a great mod. The car tracks STRAIGHT now, as it should.

jyeah · 02-02-2013, 12:49 PM

Also if you already have the bushings, you can purchase the partial kit from him as well.

dlbrooks18 · 02-02-2013, 01:00 PM

Nice mod!

robc1976 · 02-02-2013, 01:18 PM

Installing mine Monday!

G.I.Joe · 02-02-2013, 01:26 PM

It's a great kit. I have it too, and the OP is spot on in the review. The rear end of the car is way more controlable now.

D1swoop · 02-02-2013, 01:56 PM

Nice
How much is install at FFTec?

joec500 · 02-02-2013, 02:47 PM

Quote:

Originally Posted by D1swoop

Nice
How much is install at FFTec?

you should call up FFTEC, but I want to say it was billed at 3-4 hours.

Dmacc · 02-02-2013, 02:48 PM

Quote:

Originally Posted by jyeah

Also if you already have the bushings, you can purchase the partial kit from him as well.

Do you need to have power flex bushings or will the m3 rear bushing work as well?

joec500 · 02-02-2013, 02:52 PM

Quote:

Originally Posted by Dmacc

Do you need to have power flex bushings or will the m3 rear bushing work as well?

Diff bushings and Subframe bushings are different.

This kit takes the place of the powerflex diff bushings. If you already have those you can buy the partial kit with the plate support piece.

uniter · 02-02-2013, 04:05 PM

Mine works pretty damn well too

Thanks for the review.

Dmacc · 02-02-2013, 04:30 PM

Quote:

Originally Posted by joec500

Quote:

Originally Posted by Dmacc

Do you need to have power flex bushings or will the m3 rear bushing work as well?

Diff bushings and Subframe bushings are different.

This kit takes the place of the powerflex diff bushings. If you already have those you can buy the partial kit with the plate support piece.

Wow you are right I have no idea why I was thinking of subframe bushings.

boostaholic786 · 02-02-2013, 05:34 PM

I'm in for this for sure if its somewhere in the neighborhood of $699 or lower. I think this would completely eliminate all the wobble you get when you go WOT, like OP said. I thought the LSD would fix it but it still has that little bit of feeling of swaying when you hit it from a stop or even a roll. I'm going to order ASAP

joec500 · 02-02-2013, 06:10 PM

Quote:

Originally Posted by boostaholic786

I'm in for this for sure if its somewhere in the neighborhood of $699 or lower. I think this would completely eliminate all the wobble you get when you go WOT, like OP said. I thought the LSD would fix it but it still has that little bit of feeling of swaying when you hit it from a stop or even a roll. I'm going to order ASAP

When you eventually see the OEM diff bushings and realize you can actually squeeze them in your hands, you will know what's causing the rear suspension geometry to change under load. This kit literally makes your diff and subframe one single connected until ZERO play.

jyeah · 02-02-2013, 06:27 PM

Quote:

Originally Posted by boostaholic786

I'm in for this for sure if its somewhere in the neighborhood of $699 or lower. I think this would completely eliminate all the wobble you get when you go WOT, like OP said. I thought the LSD would fix it but it still has that little bit of feeling of swaying when you hit it from a stop or even a roll. I'm going to order ASAP

The full kit is only $699, before shipping that is. Cheers!

ETS Michael · 05-22-2013, 01:22 PM

Anyone have a link to purchase this?

02-01-2013, 08:08 PM	#1
joec500 Brigadier General 125 Rep 3,004 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco iTrader: (10)	DefiV Diff Lockdown Kit First of all I want to thank Rick for building a super high quality kit and for FFTEC for a quality and quick install, Dave really knows how to turn a wrench. As many people have seen on the forums, wheelhop has been destroying driveshafts and halfshafts. I actually shattered a halfshaft from wheelhop, so I looked into DSS reenforced units, but I preferred solving the root problem, which was wheel hop caused by our super soft diff bushings creating way too much play in the driveline. I have high hopes that this will save our drivelines from Wheelhop. I went into FFTEC today, who were able to install the bushings without dropping the subframe. Other shops may request to drop your subframe, but it is not needed. After a few hours I was on my way, and I noticed immediately how the rear was much more planted. Before at WOT my car would shimmy to one side or another, but after the kit was installed the car just plants and runs solid and straight. The original diff bushings can actually be squeezed by hand, that is how much play there is. Which is terrible for a 400+ WHP car. Also on the freeway when I downshift, the car no longer shifts to one side before pulling forward, it just sticks and goes. This kit is essential for any modded N54 car and to save your driveline also this kit did not induce any additional Noise Vibration or Harshness. It's pretty isolated with our subframe bushings. Also Rick offerred incredible support throughout the process. Here are some pics of the kit and installation. __________________ 2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch Last edited by joec500; 02-01-2013 at 08:13 PM..
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02-01-2013, 09:32 PM	#2
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	Where did you get it from if you dont mind me asking? Im very curious as to how MUCH different it will make the car feel under WOT and even driving around town... If you could let me know that would be much appreciated __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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02-01-2013, 09:55 PM	#3
Black Sheep A Zip an a Double Cup 80 Rep 4,462 Posts Drives: 2009 BMW 135i Join Date: Feb 2010 Location: McHenry, IL iTrader: (5)	Can't wait to install mine, I broke a shaft last year __________________ PTF Tuned \| RB's \| AMS FMIC \| AR DP's \| HPF Exhaust \| CP-E DCI \| Apex Arc 8's \| 235/275 Star Specs \|
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02-02-2013, 07:24 AM	#5
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	See I thought getting an LSD would help out/and or eliminate wheel hop in general but it didnt and I cant freaking stand it. I hardly ever really launch my car but even on the highway you described exactly what I'm going thru and how the car feels!! This is exactly what I want and especially after seeing your comments about it and seeing there video!!!! I'm SOOOOO EXCITED!!! __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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02-02-2013, 07:58 AM	#6
GOTMH8N Stay Classy 70 Rep 1,021 Posts Drives: 335i Sport Join Date: May 2012 Location: c iTrader: (2)	Wow that's pretty cool. How much is a kit like that
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02-02-2013, 10:28 AM	#7
3-Serious Lieutenant 45 Rep 473 Posts Drives: AP e92 335i Join Date: Dec 2008 Location: New york iTrader: (1)	Interesting, also curious about the price? __________________ Cobb JR Tune, HFS-4, DCI, AMS Intercooler, Vishnu CP, Forge DV's, AR DP's, RPI exhaust, AR OCC, BMW STS, Spec stage 3+ clutch, CDV delete, H&R Coil overs, Quaife LSD, DefiV Lock down kit, WOTbox. -SOLD
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02-02-2013, 12:11 PM	#8
joec500 Brigadier General 125 Rep 3,004 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco iTrader: (10)	It's not Cheap, I think the standard price is $699, but Rick might be doing specials, the best thing to do is reach out to him from his website. But considering replacing a halfshaft cost me over $800 (parts and labor), it's a great mod. The car tracks STRAIGHT now, as it should. __________________ 2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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02-02-2013, 12:49 PM	#9
jyeah Second Lieutenant 30 Rep 216 Posts Drives: 2010 BMW 335i Join Date: Jun 2012 Location: Los Angeles iTrader: (3)	Also if you already have the bushings, you can purchase the partial kit from him as well.
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02-02-2013, 01:00 PM	#10
dlbrooks18 Brigadier General 161 Rep 3,736 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	Nice mod! __________________ 2008 E90 335
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02-02-2013, 01:18 PM	#11
robc1976 DIYER 614 Rep 5,521 Posts Drives: E90 335i Join Date: Mar 2012 Location: Illinois iTrader: (14)	Installing mine Monday! __________________ JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC 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, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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02-02-2013, 01:26 PM	#12
G.I.Joe Major 30 Rep 1,041 Posts Drives: E92 335i 2008 Join Date: Nov 2009 Location: Copenhagen, Denmark iTrader: (0)	It's a great kit. I have it too, and the OP is spot on in the review. The rear end of the car is way more controlable now. __________________ E92 335i 2008 Space Grey 6MT \| Pure Stage 2 turbos \| Motiv PI \| Trueform Tech Intake \| Quaife LSD \| M3 Suspension kit \| Öhlins Road & Track Coilover \| DEFIVfab N54 diff lockdown kit \| COBB PTF E85 Map \| Fuel-It Stage 3 LPFP \| NGK 5992 plugs \| Wagner FMIC \| Wagner 3" DP \| Milltek exhaust \| Tial BOV \| SPEC Stage 3+ clutch \| SPEC Steel SM Flywheel \|
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02-02-2013, 01:56 PM	#13
D1swoop Enlisted Member 1 Rep 34 Posts Drives: e92 Join Date: May 2012 Location: Bay Area iTrader: (0)	Nice How much is install at FFTec?
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02-02-2013, 04:05 PM	#17
uniter Black on Black on Black. 38 Rep 532 Posts Drives: 335i/6mt Sport,Nav,Prem. Join Date: Feb 2010 Location: New Hope, PA iTrader: (1)	Mine works pretty damn well too Thanks for the review. __________________ LEMANS BLUE M-TECH E92->PROCEDE REV3::BIEHNTUNE FLASH::ETS 7" FMIC::RACELAND DPS::OS GIKEN 1.5 WAY::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV
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02-02-2013, 05:34 PM	#19
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	I'm in for this for sure if its somewhere in the neighborhood of $699 or lower. I think this would completely eliminate all the wobble you get when you go WOT, like OP said. I thought the LSD would fix it but it still has that little bit of feeling of swaying when you hit it from a stop or even a roll. I'm going to order ASAP __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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05-22-2013, 01:22 PM	#22
ETS Michael Major 76 Rep 1,155 Posts Drives: 335i Join Date: May 2009 Location: Vancouver, WA iTrader: (4)	Anyone have a link to purchase this?
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