3.08 LSD on a DCT?

gman36 · 02-23-2015, 01:16 AM

Has anyone swapped there 2.56 to a 3.08 LSD on a DCT 1er?

If so can I hear your opinions? Did everything work flawlessly?

Thanks

dtla1 · 02-23-2015, 04:37 PM

This is currently the only option showing on ECS' website. I'm curious to also hear people's opinions.

Pyrat 2 · 02-24-2015, 08:27 PM

I stayed with the stock ratio when I had my LSD built. With the seven speed close ratio of the dct I didn't see a lot of value in raising the ratio. I only saw downside with respect to mileage. I did raise the ratio on my e90 6mt as there was a more clear need. 6 speeds vs 7 and wider ratios between gears.

e36addict · 02-24-2015, 09:09 PM

Quote:

Originally Posted by HeelToe

I stayed with the stock ratio when I had my LSD built. With the seven speed close ratio of the dct I didn't see a lot of value in raising the ratio. I only saw downside with respect to mileage. I did raise the ratio on my e90 6mt as there was a more clear need. 6 speeds vs 7 and wider ratios between gears.

I agree with this. Why not just contact Mfactory about a 2.56 unit? That's what I did and it's excellent.

jafo1701 · 02-24-2015, 11:37 PM

I just ordred mine from M Factory for my 2011 135i DCT. Can't wait to get it installed, they said it would be around a month. Which works ok since my car is stored for the winter.

jafo1701 · 02-24-2015, 11:38 PM

Quote:

Originally Posted by e36addict

I agree with this. Why not just contact Mfactory about a 2.56 unit? That's what I did and it's excellent.

Btw what kind of limited slip diff fluid did you use. I'm assuming i can use the 75w 140 Limited slip fluid. Was just going to buy a gallon of the Redline stuff.

gman36 · 02-25-2015, 02:01 AM

Quote:

Originally Posted by e36addict

Quote:

Originally Posted by HeelToe

I stayed with the stock ratio when I had my LSD built. With the seven speed close ratio of the dct I didn't see a lot of value in raising the ratio. I only saw downside with respect to mileage. I did raise the ratio on my e90 6mt as there was a more clear need. 6 speeds vs 7 and wider ratios between gears.

I agree with this. Why not just contact Mfactory about a 2.56 unit? That's what I did and it's excellent.

I am just curious if anyone has done it, I'm interested in their opinions of the re gear and if it worked flawlessly with the dct

3002 tii · 02-25-2015, 07:44 AM

Quote:

Originally Posted by jafo1701

Btw what kind of limited slip diff fluid did you use. I'm assuming i can use the 75w 140 Limited slip fluid. Was just going to buy a gallon of the Redline stuff.

Redline 75w90NS

MightyMouseTech · 02-25-2015, 08:02 AM

Does MFactory not make clutch or torsen style? Which are you getting? Torsen uses regular gear oil.

e36addict · 02-25-2015, 08:08 AM

Quote:

Originally Posted by MightyMouseTech

Does MFactory not make clutch or torsen style? Which are you getting? Torsen uses regular gear oil.

It's a helical style.. So basically torsen. I just used regular Castrol 75w90 fluid.

09135ijh · 02-25-2015, 10:15 AM

isn't stock 3.08? wording flipped? 3.08 to 2.56

I just ordered 3.08 from MFactory really thinking should have gone 3.46 for ripping around town and highway pulls :/

Freon · 02-25-2015, 10:29 AM

Quote:

Originally Posted by 09135ijh

isn't stock 3.08? wording flipped? 3.08 to 2.56

I just ordered 3.08 from MFactory really thinking should have gone 3.46 for ripping around town and highway pulls :/

3.08 is the stock ratio for the 6MT. The 6MT, DCT, and 6AT are all different ratios.

09135ijh · 02-25-2015, 01:05 PM

they shipped my 3.08 before I switched so I will be an additional MFactory customer soon, great company so far

M. Holtmeier · 02-26-2015, 06:19 AM

What did you guys pay for your Mfactory lsd? I spoke to Turner and the Quiafe is $2700 for my DCT car.

02-23-2015, 01:16 AM	#1
gman36 First Lieutenant 18 Rep 366 Posts Drives: BMW 135 Join Date: Apr 2013 Location: Nevada iTrader: (3)	3.08 LSD on a DCT? Has anyone swapped there 2.56 to a 3.08 LSD on a DCT 1er? If so can I hear your opinions? Did everything work flawlessly? Thanks
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02-23-2015, 04:37 PM	#2
dtla1 Colonel 833 Rep 2,234 Posts Drives: 2011 135i, Space Grey Join Date: Apr 2014 Location: Silicon Valley iTrader: (2)	This is currently the only option showing on ECS' website. I'm curious to also hear people's opinions.
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02-24-2015, 08:27 PM	#3
Pyrat 2 Colonel 1494 Rep 2,564 Posts Drives: Rapidly from A to B Join Date: Jun 2005 Location: Chicago 'burbs or TN Smokies iTrader: (3) Garage List 2024 GT4 RS [0.00] 2022 X2 M35i [0.00] 2007 Z4 M Roadster [8.33]	I stayed with the stock ratio when I had my LSD built. With the seven speed close ratio of the dct I didn't see a lot of value in raising the ratio. I only saw downside with respect to mileage. I did raise the ratio on my e90 6mt as there was a more clear need. 6 speeds vs 7 and wider ratios between gears. __________________ '24 GT4 RS, '22 X2 M35i, '22 GT4, '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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02-24-2015, 11:37 PM	#5
jafo1701 Second Lieutenant 41 Rep 257 Posts Drives: 2011 135i, 2016 VW GTI Join Date: Oct 2012 Location: Iowa iTrader: (0)	I just ordred mine from M Factory for my 2011 135i DCT. Can't wait to get it installed, they said it would be around a month. Which works ok since my car is stored for the winter.
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02-25-2015, 08:02 AM	#9
MightyMouseTech Major General 4393 Rep 6,202 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	Does MFactory not make clutch or torsen style? Which are you getting? Torsen uses regular gear oil.
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02-25-2015, 10:15 AM	#11
09135ijh Second Lieutenant 26 Rep 221 Posts Drives: 135/340/M235/M240/current-M3 Join Date: Apr 2012 Location: Worcester MA iTrader: (0)	isn't stock 3.08? wording flipped? 3.08 to 2.56 I just ordered 3.08 from MFactory really thinking should have gone 3.46 for ripping around town and highway pulls :/
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02-25-2015, 01:05 PM	#13
09135ijh Second Lieutenant 26 Rep 221 Posts Drives: 135/340/M235/M240/current-M3 Join Date: Apr 2012 Location: Worcester MA iTrader: (0)	they shipped my 3.08 before I switched so I will be an additional MFactory customer soon, great company so far
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02-26-2015, 06:19 AM	#14
M. Holtmeier Enlisted Member 16 Rep 32 Posts Drives: '12 AW 135i M-Sport DCT Join Date: Dec 2014 Location: Omaha, NE iTrader: (0)	What did you guys pay for your Mfactory lsd? I spoke to Turner and the Quiafe is $2700 for my DCT car.
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