To LSD or not?

Zombie1 · 07-18-2013, 07:05 AM

I'm doing a massive suspension overhaul with m3 subframe bushings rear gude rods struts shocks m3 front suspension how much more would it cost to install an LSD? Just labor

Tommeh · 07-18-2013, 11:05 AM

No idea in labor, but the cost of getting a LSD is probably the single most expensive production upgrade for our cars T_T

Pyrat 2 · 07-18-2013, 11:19 AM

I paid 3200 parts and labor for a quaife installed. Very nice upgrade.

HP Autosport · 07-18-2013, 11:23 AM

Quote:

Originally Posted by Zombie1

I'm doing a massive suspension overhaul with m3 subframe bushings rear gude rods struts shocks m3 front suspension how much more would it cost to install an LSD? Just labor

If the final drive is still in the car it will take around 7 hours of labor. If the final drive is outside of the car and you want to just swap the 'pumpkin,' it will take four hours of labor.

-Mike

Reapur · 07-18-2013, 11:30 AM

Go for the wavetrac option. I have zero complaints with it, performs fantastic on the track and street. Car is super stable and controllable at the limit, launches beautifully and adds a whole new level of confidence plus it costs less than the other options out there which is a huge bonus.

dcaron9999 · 07-19-2013, 09:09 AM

Quote:

Originally Posted by Reapur

Go for the wavetrac option. I have zero complaints with it, performs fantastic on the track and street. Car is super stable and controllable at the limit, launches beautifully and adds a whole new level of confidence plus it costs less than the other options out there which is a huge bonus.

I have 2011 135i MT6 speed. I may be considering this once my warranty is finished. Did you install it yourself or get it done by an indy? How much labor was it? Any impacts to electronics/controls (e-diff) on our cars?

ksahakian1 · 07-19-2013, 10:41 PM

Does it matter from the manual to the 7 speed? I thought it came with LSD....

Reapur · 07-19-2013, 10:58 PM

Quote:

Originally Posted by ksahakian1

Does it matter from the manual to the 7 speed? I thought it came with LSD....

None of the 135 variants come with a factory LSD. They're all open diffs. The auto vs manual differences are that the 6mt has a welded ring gear and the auto has a bolted ring gear with a shorter final drive.

All the LSD options have a core exchange where you buy the complete diff with the LSD installed, you remove yours and then send it into them and they use that for another customer by installing a LSD unit into that one. After they receive your core they refund you for it.

I was lucky enough to have the wavetrac installed by the previous owner, it does not mess with the traction control or e-diff because it tends to come into effect before the e-diff does so it won't even come on. I just drive my 135 with DSC off all the time. I came from a turbo honda s2000 which had zero electronic nannies besides ABS.

High quality tires like Dunlop zII will make the car a different animal and give tons of confidence. I'd suggest this as a first mod to any 135 owner.

Dmacc · 07-20-2013, 09:09 AM

LSD is the single greatest mod you can do to this car, I'd argue it's needed for any type of spirited driving. If you are doing the entire suspension overhaul, LSD should be at the top of the list imo, this car just isn't as controllable or as fun to drive without it.

Stohlen · 07-20-2013, 10:25 AM

http://www.1addicts.com/forums/showthread.php?t=847743

On a lift, swapping a pumpkin should take an hour max.

GeeRam · 07-20-2013, 01:14 PM

Quote:

Originally Posted by Reapur

None of the 135 variants come with a factory LSD. They're all open diffs. The auto vs manual differences are that the 6mt has a welded ring gear and the auto has a bolted ring gear with a shorter final drive.

He was asking about different between manual and 7-speed, i.e the DCT, which has the same welded ring gear and large pumpkin unit as the 6MT, just with a higher ratio gearing.

Zombie1 · 07-20-2013, 01:36 PM

Quote:

Originally Posted by Stohlen

http://www.1addicts.com/forums/showthread.php?t=847743

On a lift, swapping a pumpkin should take an hour max.

I may just have to go with this place

07-18-2013, 07:05 AM	#1
Zombie1 Colonel 171 Rep 2,347 Posts Drives: BMW 135i 2010 Join Date: Jul 2012 Location: Island long iTrader: (6)	To LSD or not? I'm doing a massive suspension overhaul with m3 subframe bushings rear gude rods struts shocks m3 front suspension how much more would it cost to install an LSD? Just labor __________________ Mods:-Berkexhaust -alpinaB3flash -CobbAP -Cobb FMIC -ER charge pipe tialQ bov -M3 front sway bar -M3 subframe bushings -M3 front upper and lower control arms -M3 guide rods -M3 rear upper control arms -Mfactory LSD -defiv lockdown kit -TC Kline SA coilovers /camber plates- HP rear toe arms
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07-18-2013, 11:05 AM	#2
Tommeh Lieutenant 56 Rep 481 Posts Drives: 96 BMW M3 & 16 GMC Canyon Join Date: Mar 2011 Location: Washington iTrader: (0)	No idea in labor, but the cost of getting a LSD is probably the single most expensive production upgrade for our cars T_T __________________ 2008 BMW 135i ///MSport Alpine White / Taupe Leatherette Cobb 2+ Aggressive \| BMS Intake \| ER Charge Pipe + Tial Q \| ER FMIC \| RR Downpipe \| RR Exhaust \| RR OCC \| KWV1 \| Apex ARC-8 245/18/40, 275/18/35
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07-18-2013, 11:19 AM	#3
Pyrat 2 Colonel 1418 Rep 2,560 Posts Drives: Rapidly from A to B Join Date: Jun 2005 Location: Chicago 'burbs or TN Smokies iTrader: (3) Garage List 2022 Porsche GT4 [9.64] 2018 Porsche GT3 [9.33] 2007 Z4 M Roadster [8.33] 2020 BMW X1 [0.00]	I paid 3200 parts and labor for a quaife installed. Very nice upgrade. __________________ '07 Z4MR '22 GT4 '18 GT3 '16 GT4, '16 M2, '14 X1, '13 135is, '06 330i, '03 323 Ci, '01 330i, '99 M3 (RIP), '96 318is, some non-BMWs
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07-18-2013, 11:30 AM	#5
Reapur Second Lieutenant 17 Rep 294 Posts Drives: 2009 135i Join Date: May 2013 Location: Toronto iTrader: (0)	Go for the wavetrac option. I have zero complaints with it, performs fantastic on the track and street. Car is super stable and controllable at the limit, launches beautifully and adds a whole new level of confidence plus it costs less than the other options out there which is a huge bonus.
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07-19-2013, 10:41 PM	#7
ksahakian1 New Member 6 Rep 21 Posts Drives: 2013 BMW 135i Join Date: May 2013 Location: Glendale, CA iTrader: (0)	Doesn't the 135i come with LSD? Does it matter from the manual to the 7 speed? I thought it came with LSD....
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07-20-2013, 09:09 AM	#9
Dmacc Colonel 200 Rep 2,799 Posts Drives: 2011 BMW 1M Join Date: Mar 2010 Location: So Cal iTrader: (1)	LSD is the single greatest mod you can do to this car, I'd argue it's needed for any type of spirited driving. If you are doing the entire suspension overhaul, LSD should be at the top of the list imo, this car just isn't as controllable or as fun to drive without it. __________________ thanks to MGallop
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07-20-2013, 10:25 AM	#10
Stohlen Major 64 Rep 1,267 Posts Drives: AW 135i Join Date: Aug 2012 Location: Waterford, Mi iTrader: (2) Garage List 2008 BMW 135i [5.66]	http://www.1addicts.com/forums/showthread.php?t=847743 On a lift, swapping a pumpkin should take an hour max. Last edited by Stohlen; 07-20-2013 at 10:31 AM..
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