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Old 02-20-2017, 10:49 AM   #1
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Is LSD standard on the S?

Does a Limited Slip Differential come as standard equipment
as part of Boxster S's upgraded suspension and drivetrain components?

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Old 02-20-2017, 11:16 AM   #2
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Does a Limited Slip Differential come as standard equipment
as part of Boxster S's upgraded suspension and drivetrain components?
Nope, all have an open differential (not sure about the latest cars) but you do have a few options like a Torsen, Guard, OS Giken, etc. (different types..) but it will change the way your car drives in a awesome way.. stongly recommended

Last edited by Gilles; 02-20-2017 at 11:18 AM.
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Old 02-20-2017, 11:31 AM   #3
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Was it at least an option?
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Old 02-20-2017, 12:13 PM   #4
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Not in 2001. I have an order sheet and neither traction or slip is found on it.
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Old 02-20-2017, 12:22 PM   #5
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I know PCM was an option in 2003.
I thought LSD was at least optional, but not sure when.

Maybe 2003-04 if not 2001?
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Old 02-20-2017, 12:35 PM   #6
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Eric Johnson may be able to get you and LSD.He is the gearbox guru who chimes in sometimes.
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Old 02-20-2017, 01:29 PM   #7
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no mechanical lsd for 986 ever. there was an electronic version that used PSM and ABS but a bit of a misnomer.
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Old 02-20-2017, 02:59 PM   #8
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Not ever. Wow.

I guess the occasional posts on LSD are regarding aftermarket units.
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Old 02-20-2017, 03:04 PM   #9
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available here

http://986forum.com/forums/general-discussions/64022-anyone-need-new-lsd.html
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Old 02-20-2017, 03:12 PM   #10
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no mechanical lsd for 986 ever. there was an electronic version that used PSM and ABS but a bit of a misnomer.
http://986forum.com/forums/general-discussions/62890-what-transaxle-do-i-have.html
Post number #2 ?
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Old 02-20-2017, 03:23 PM   #11
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vs post #9 or #19?
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Old 02-20-2017, 03:30 PM   #12
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I love my Guard torque biasing diff.
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Old 02-20-2017, 03:42 PM   #13
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vs post #9 or #19?
some 5 speeds got LSD according to my G8601-002 trans code.

Not a real 986 as its not an S I guess
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Old 02-20-2017, 04:13 PM   #14
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well, i stand corrected then. never seen one in person, never seen one for sale, never seen the option available, not indicated as available in the PET, and you are the first person i've seen to have one.
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Old 02-20-2017, 04:34 PM   #15
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well, i stand corrected then. never seen one in person, never seen one for sale, never seen the option available, not indicated as available in the PET, and you are the first person i've seen to have one.
According to what was written in the post I noted it should be. Trans code would suggest. But I happen to have the car on jack stands as its getting its winter work done and low and behold if it doesn't behave as it should for a limited slip. Is it toast?( I changed trans fluid last year with Porsche oil). Is it a bad joke and the ABS is adding the behaviour? I don't have PASM or traction control that I know of but I'd swear when it lets go both wheels are spinning. I generally get it sideways once a day 5 days a week on my morning commute 6 months a year.

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Old 02-20-2017, 04:39 PM   #16
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I'll have to do a burn out in the spring for the real answer I guess. One track or two
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Old 02-20-2017, 05:21 PM   #17
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Traction control was an option, but no LSD.

++does boxster 97-03 has traction control?++ - Pelican Parts Technical BBS
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Old 02-20-2017, 05:48 PM   #18
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Could traction control mimic an LSD?

I'm thinking it might be able to do it.

Think if a wheel was spinning, while the other one wasn't.
Traction loss. ABS knows. Locks the spinning wheel.
So, open diff, spins the other wheel instead. LSD.

Many gradations of ABS before lock.
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Old 02-21-2017, 09:21 AM   #19
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Could traction control mimic an LSD?
No. Well, if you meant could TC act as a crappy LSD that acts nothing like a real LSD? Then, maybe.

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Think if a wheel was spinning, while the other one wasn't.
Traction loss. ABS knows. Locks the spinning wheel.
So, open diff, spins the other wheel instead. LSD. Many gradations of ABS before lock.
TC and LSD are two different solutions to similar but different problems. ABS does not "lock" the spinning wheel - ABS can only apply the brakes and at the limit of brake lockup, the ABS intervenes. Now you've gone from a wheel that was loosing traction and spinning to a wheel that is nearly skidding while under maximum braking. At the wheel/tire, this isn't the same effect as an LSD which is based on sensing the torque difference between the two rear wheels, not the difference in wheel speed.

I suppose TC/ABS could be considered an approximation of an LSD but its not a very good approximation.
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Old 02-21-2017, 09:35 AM   #20
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some 5 speeds got LSD according to my G8601-002 trans code.
Agree. Very, very rare.

G8600-001 = 5 speed gearbox for 1997 - 1999
G8601-001 = 5 speed gearbox for 2000 - 2004
-001 is non-limited slip differential (LSD)
-002 is for the LSD

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