[Marcus-SanDiego]

Originally Posted by WOPALX

My $tealership refused to do some AT work under warranty due to the 'extra stress' the LSD put on the drive train.

As it turns out it was not an AT issue but still you need to pay to play at times.

This was in Australia?

[Belarus]

Originally Posted by Marcus-SanDiego

This was in Australia?

You would be accepting the same risk (voiding the warranty) in N.A. if you brought the car for transmission issue and dealership found out that you've made changes to it and/or differential

[newbieman78]

yeah why bother with LSD......Crack is safer

[rbaldwin28]

I have never felt less control or less safe with a LSD, always better in rain or shine. What I have felt before in heavy rain or on a flooded road with DSC active the car fells the rear tires slip especially up hill and just keeps applying rear brakes fighting the throttle you are applying so you can't go up hill fast even if you go full throttle. I can see how this would feel like your rear tire were just spinning so you can't get up the hill. If you hit deep water fast enough the car will hydro plane but it has nothing to do with the diff. The surface area of the tires is pretty big so 60mph into a puddle and yea.

[Marcus-SanDiego]

Originally Posted by Belarus

You would be accepting the same risk (voiding the warranty) in N.A. if you brought the car for transmission issue and dealership found out that you've made changes to it and/or differential

Right. Only if the dealer can prove that the LSD caused the problem. But, yes, we always accept that risk when we modify something.

[Belarus]

Originally Posted by Marcus-SanDiego

Right. Only if the dealer can prove that the LSD caused the problem. But, yes, we always accept that risk when we modify something.

If dealership voids the warranty by stating it was caused by modification, IMHO the burden is on a car owner to prove that it didn't

[scottp999]

Open diff with DSC or DTC intervention = scary and unpredictable with 380-430 whp = fried rear brake pads

with LSD = predictable control and happy rear brakes = more power to the ground and faster acceleration in a straight line and out of corners.

One of my top 3 mods in no particular order = Tune, Meth, LSD

[Marcus-SanDiego]

Originally Posted by Belarus

If dealership voids the warranty by stating it was caused by modification, IMHO the burden is on a car owner to prove that it didn't

I'm not too worried, Belarus. Been driving these cars for a long time -- with all sorts of mods. Have never had any trouble with warranty work.

Thanks for the info.

[oc_bimmer]

Originally Posted by scottp999

One of my top 3 mods in no particular order = Tune, Meth, LSD

+ 1

These are the most important mods for the E9X. Period.

[Belarus]

Originally Posted by Marcus-SanDiego

I'm not too worried, Belarus. Been driving these cars for a long time -- with all sorts of mods. Have never had any trouble with warranty work.

Thanks for the info.

You're one of the lucky to find/have dealership that's MOD friendly...

[Marcus-SanDiego]

Originally Posted by Belarus

You're one of the lucky to find/have dealership that's MOD friendly...

Yep. Have cultivated a lot of relationships over the years.

It's all good.

Take care, B.

[fruition3000]

Its turns out that there is No LSD offered by Quaife, Dinan or Wavetrac for AT 335i's after 2007.

It also turns out that Wavetrac is being sued by Quaife. Wavetrac was a direct distributer for Quaife and in turn they copied and modifed the LSD. Since Quaife is overseas and the currency always changes it can be difficult to get a fixed price for the Quaife right now.


I spoke to Koala Motorsports in Ohio about their LSD but I don't know how reliable they are.

[mid-corner fun]

Originally Posted by fruition3000

Its turns out that there is No LSD offered by Quaife, Dinan or Wavetrac for AT 335i's after 2007.

Yes, there is. The Quaife LSD already works fine on AT 2007+ (MY08 and beyond) and the release of the Wavetrac equivalent is imminent.

[fruition3000]

Originally Posted by PeterM1

Yes, there is. The Quaife LSD already works fine on AT 2007+ (MY08 and beyond) and the release of the Wavetrac equivalent is imminent.

It might work but after calling about 5 shops they all say that the LSD was made for models before 07.

[oc_bimmer]

Originally Posted by fruition3000

It might work but after calling about 5 shops they all say that the LSD was made for models before 07.

you must have called the wrong shops.
I'm 09 AT and I got a quaife installed a few weeks ago.
FYI: all AT's are bolted, and there's a quaife that fits. Harold at Hp autowerks has them on stock.

[mid-corner fun]

Originally Posted by fruition3000

It might work but after calling about 5 shops they all say that the LSD was made for models before 07.

you're calling the wrong shops. Start by taking to HP autowerks and VAC.

[dlbrooks18]

Originally Posted by oc_bimmer

you must have called the wrong shops.
I'm 09 AT and I got a quaife installed a few weeks ago.
FYI: all AT's are bolted, and there's a quaife that fits. Harold at Hp autowerks has them on stock.

Yep, Harold did mine, I'm an AT with April '08 build-date, there is a Quaife that fits

[fruition3000]

Oh ok I see what you guys are talking about now. You just need a shop that can cut of the rings and then you can use the older quaife or wavetrac model. Wavetrac said they will be coming out with a new LSD for the newer welded 07+ models

[dlbrooks18]

Originally Posted by fruition3000

Oh ok I see what you guys are talking about now. You just need a shop that can cut of the rings and then you can use the older quaife or wavetrac model. Wavetrac said they will be coming out with a new LSD for the newer welded 07+ models

Can't speak on Wavetrac, but my understanding is that there are two versions of the Quaife LSD on the market for newer and older models.. the newer quaife is smaller ..

[mid-corner fun]

Originally Posted by fruition3000

Oh ok I see what you guys are talking about now. You just need a shop that can cut of the rings and then you can use the older quaife or wavetrac model. Wavetrac said they will be coming out with a new LSD for the newer welded 07+ models

Sadly Wavetrac for 07+ is months behind schedule...I was in constant communication with them since March on their new kit for the 07+ AT LSDs, it was just around the corner back then. Even took my car in for a Wavetrac installation as the dealer confirmed with Wavetrac they could get the unit in...no go...ended up with a Quaife and couldn't be happier with the result. This is with an AT MY08.

If you find the right shop, they'll get you a new core, install the Quaife/Wavetrac in it and off you go with minimum downtime. You then get (full) credit back for your old core.

[Marcus-SanDiego]

Originally Posted by PeterM1

Sadly Wavetrac for 07+ is months behind schedule...I was in constant communication with them since March on their new kit for the 07+ AT LSDs, it was just around the corner back then. Even took my car in for a Wavetrac installation as the dealer confirmed with Wavetrac they could get the unit in...no go...ended up with a Quaife and couldn't be happier with the result. This is with an AT MY08.

If you find the right shop, they'll get you a new core, install the Quaife/Wavetrac in it and off you go with minimum downtime. You then get (full) credit back for your old core.

This is how I am doing it. I ordered my Quaife through HP Autowerks (today). They are sending me a complete final drive. I figure 2-3 hour install. In and out the same day with no trouble.

Looking forward to it.

[skier]

Originally Posted by fruition3000

I have read mixed reviews about the Quaife LSD. A lot people say its awesome on dry pavement and they feel that the car has more control. On the other hand a few people say that in rain they feel like the car is hydroplaning and it slides out way easier. What's the deal? Anyone with the LSD have these issues?

BTW any loss of MPG with the install of the LSD?

Hydroplaning has more to do with type of tires, water depth, and speed than LSD.