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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 03-15-2013, 03:12 AM   #1
peytonracer4
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so if could get a LSD for under $1000...

who would be interested in that? i have a lead on something. i want to make sure it's legit and i want to get one myself if it is. but who all would be interested in such a thing? i've searched LONG AND HARD and haven't found a fully encased LSD for under $2k
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Old 03-15-2013, 03:22 AM   #2
David McMahon
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Subbed for future interest, It will be US only though I suppose.
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Old 03-15-2013, 03:27 AM   #3
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Subbed for future interest, It will be US only though I suppose.
if this comes through i will have good news for you. i'll keep you posted.
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Old 03-15-2013, 03:28 AM   #4
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yes for sure
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Old 03-15-2013, 03:54 AM   #5
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Interesting. Is this a clutch type or a geared LSD?
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Old 03-15-2013, 04:44 AM   #6
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As far as I know, clutch. I've yet to find out all the details. I just emailed the guy tonight. Hopefully he gets back to me tomorrow
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Old 03-15-2013, 05:08 AM   #7
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Wouldn't it be cheaper to just bolt a m3 rear in?
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Old 03-15-2013, 05:12 AM   #8
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Wouldn't it be cheaper to just bolt a m3 rear in?
The problem with that is that you're stuck with a 3.62 gear ratio which is way too aggressive for a 5 speed.
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Old 03-15-2013, 05:13 AM   #9
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Wouldn't it be cheaper to just bolt a m3 rear in?
Not really. It's $1000 (if you get a deal) to $1700 for an m3 rear. Then you have to deal with the increased offset. I can't do that because I have somewhat expensive wheels that are perfect fitment for my car.
And not everyone wants the aggressive 3.46 or 3.62 or 4.10 ratio. I, personally, very much like my stock ratio.
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Old 03-15-2013, 05:17 AM   #10
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The problem with that is that you're stuck with a 3.62 gear ratio which is way too aggressive for a 5 speed.
Agreed, 5 speed may not be ideal.
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Old 03-15-2013, 05:19 AM   #11
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Agreed, 5 speed may not be ideal.
Yeah. I really like mpg. Just about as much as I like performance. So if I can get a stock ratio LSD I would be entirely happy.
I want it for autocross. But I would very much like to keep close to stock gearing. I'm sure there's a lot out there that feel the same way.
IMO even the stock gearing is slightly high. 3000 rpm at 70ish mph is high
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Old 03-15-2013, 08:28 AM   #12
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Old 03-15-2013, 09:00 AM   #13
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Does DSC need to be modified to account for the LSD?
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Old 03-15-2013, 09:02 AM   #14
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If it were plug and play, I'd be in.
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Old 03-15-2013, 09:18 AM   #15
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Does DSC need to be modified to account for the LSD?
No modification to the DSC for a LSD, the DSC will intervene less often due to the increased traction available.
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Old 03-15-2013, 10:21 AM   #16
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+1 I'd be interested
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Old 03-15-2013, 10:30 AM   #17
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I don't see how you're going to get one at that price unless it's cheap. Even those OBX cores on fleabay are like $400...then you have to install.
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Old 03-15-2013, 10:31 AM   #18
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Less than $1000? Interested!
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Old 03-15-2013, 10:40 AM   #19
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No modification to the DSC for a LSD, the DSC will intervene less often due to the increased traction available.
Right. DSC will intervene if the car exceeds a given yaw rate. DTC will intervene if any wheel has excessive speed for any given situation, kind of like an electronic brake-induced LSD.

Could there be a situation where DTC kicks in due to wheel spin and "fights" the LSD? Like accelerating quickly on a low-traction surface (wet, snow, gravel) and having DSC+DTC on.
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Old 03-15-2013, 10:57 AM   #20
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Wanganstyle can do it for under $2k iirc.

Also- either performance gearing or diffs online used to have a LSD for under $2k.

I'd probably be interested- but I'd need details before I could commit.
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