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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Wavetrac Differentials vs. Quaife ATB Differential for RWD 335i



View Poll Results: Wavetrac Differential or Quaife ATB Differential
Wavetrac LSD Differential 68 45.95%
Quaife ATB LSD Differential 73 49.32%
Other... 7 4.73%
Voters: 148. You may not vote on this poll

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      03-05-2010, 04:16 AM   #1
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Question Wavetrac Differentials vs. Quaife ATB Differential for RWD 335i

Would love to hear forum members feedback, preference and why...

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Last edited by Belarus; 03-10-2010 at 12:17 AM.
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      03-05-2010, 04:24 AM   #2
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the only benefit i know of is that the wavetrac works when one wheel loses 100% of its traction where the quaife can not transmit any power to the opposite wheel when the slipping wheel loses 100% of its traction. Also word is that the wavetrac will have a unit available for those with AT and welded diffs in the upcoming months.
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      03-05-2010, 04:36 AM   #3
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Looks like there is now an Install Kit available that allows fitment of a WavetracŪ differential in a late model rear axles of 135i and 335i models where the ring gear is factory welded to the OEM differential.
http://www.namotorsports.net/detail....WT30.309.171WK

Does Quaife LSD comes with a similar kit or it doesn't require one ?
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      03-05-2010, 04:48 AM   #4
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Quote:
Originally Posted by Belarus View Post
Does Quaife LSD comes with a similar kit or it doesn't require one ?
Don't know what is implied as a "kit" but it seems that it's an adaptor plus bolts that is used once your welded ring gear is machined off to allow for assembly.

Basically there are 4 styles of diffs available.
Large diff housing : Bolted / Welded ring gear
Small diff housing : Bolted / Welded ring gear

Quaife has a solution available right now for both Large and Small bolted ring gear assemblies.

Contact Birds UK : http://www.birdsauto.com/contact.aspx.
Give them your VIN number and they will let you know what diff you have in your car and if it's bolted or welded.

Last edited by Sparky66; 03-05-2010 at 05:04 AM.
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      03-06-2010, 03:17 AM   #5
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Quote:
Originally Posted by Sparky66 View Post
Don't know what is implied as a "kit" but it seems that it's an adaptor plus bolts that is used once your welded ring gear is machined off to allow for assembly.
....
It's Wavetrac's terminology. From my understanding it means you ship them your welded OEM differential, they then separate the ring gear from the stock using CNC equipment, machine it, drill it and thread it to allow bolt mounting of Wavetrac differential.
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      03-06-2010, 04:17 AM   #6
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Friend of mine in Sweden who has tuned his car to 480hps, and play sometimes on track, he told me that either Quaife or Wavetrac's LSD are just slightly better than stock's E-diff, unless you are using clutch type such as Unicas's LSD, that would be a big different.
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      03-06-2010, 04:34 AM   #7
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Quote:
Originally Posted by Renus View Post
Friend of mine in Sweden who has tuned his car to 480hps, and play sometimes on track, he told me that either Quaife or Wavetrac's LSD are just slightly better than stock's E-diff, unless you are using clutch type such as Unicas's LSD, that would be a big different.
as far as i know nobody in sweden has a 480 horsepower 335 or one at least big bigger turbos since you cannot get up to that number without them or Nitro.
But maybe this guy is off the forums or clubs.
Concerning LSD there is a huge difference between a real LSD and e-diff.
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      03-06-2010, 05:22 AM   #8
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Quote:
Originally Posted by enrita View Post
Concerning LSD there is a huge difference between a real LSD and e-diff.
+1

Night and day difference.

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      03-06-2010, 02:03 PM   #9
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I was in the same boat as you however I believe I've come to a decision.

Wavetrac

This winter has been rough on my 335. Even with snow tires on all four corners I still managed to get stuck on a relatively small incline (I'm talking 5 degrees at most) with light slushy snow on the ground. All power was going to the wheel with no traction. It was at that moment I had clarity. Quafie is OUT. Last thing I need is an open diff under situations like this. I need a diff not only for powering out of corners but also for practical situations as I've described above. If it never snows where you live then either diff would be fine.

Good luck!!!


Quote:
Originally Posted by Belarus View Post
Would love to hear forum members feedback, preference and why...
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      03-06-2010, 02:12 PM   #10
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I got the wavetrac. It rains frequently where I live and since I've had it, the car has become much more difficult to break the tires loose even in the RAIN. It is also much harder to get the DTC light to come on under hard acceleration and cornering. It's a BIG difference. I decided on the wavetrac because I think it's a much more practical solution for street use where it can rain or snow. You'll notice it instantly even with just light throttle out of corners.
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      03-06-2010, 02:13 PM   #11
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Autotech sent me a complete unit (it still needed to be bolted up and was about 4 hours), then I had to send back my core. Cost in total was about 2700$ Canadian, including labor and taxes.
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      03-06-2010, 02:58 PM   #12
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Quote:
Originally Posted by Grouch604 View Post
Autotech sent me a complete unit (it still needed to be bolted up and was about 4 hours), then I had to send back my core. Cost in total was about 2700$ Canadian, including labor and taxes.
just wondering, who installed the unit for you?
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      03-06-2010, 03:03 PM   #13
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What is the price difference between the two? I know Quaife has been around quite a while and has a solid reputation for building bulletproof diff's but I can't really say the same for Wavetrac.

From all the comparison threads I've read the only major difference is complaints of noise coming from the Wavetrac in comparison to the Quaife.
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      03-06-2010, 03:58 PM   #14
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+1 for Quaife
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      03-06-2010, 05:48 PM   #15
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Quote:
Originally Posted by tvieira24 View Post
What is the price difference between the two? I know Quaife has been around quite a while and has a solid reputation for building bulletproof diff's but I can't really say the same for Wavetrac.

From all the comparison threads I've read the only major difference is complaints of noise coming from the Wavetrac in comparison to the Quaife.
Wavetrac is about $100-$200 cheaper.
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      03-06-2010, 06:19 PM   #16
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So far from all the reading and Web searching I've done you can't go wrong with either one. Quaife ATB Differential has been around for over 20 years. Gets very positive customer satisfaction, excellent customer support and manufacturer warranty.

Wavetrac also gets very good reviews from customers about their customer support and warranty if you do come across any issues. It's manufactured in US, where Quaife in U.K., unless they've opened a manufacturing shop in US. Wavetrac internal gears are made from high strength 9310 alloy steel... how much it's better vs material Quaife uses ?

With both manufacturers if you do have any problems with LSD it will need to be send back for repairs.

One area where WaveTrac has performance advantage based on their claims (http://wavetrac.net/technical.htm) over all the other gear differentials is during zero or near-zero (over 80% loss of traction) axle-load conditions. e.g. if you lift a wheel and during the transition from accel to decel, all gear diffs except WavetracŪ, do nothing.

There are few posts on this forum with OPs reviews that went Quaife or Wavetrac path all seem to be happy with their choice/decision.

Would love to hear any feedback on what if any problems people have come across and how much of PITA it was to get it resolved.

So far based on what I've been able to find out if I'm to make the investment, I would go with WaveTrac based on price, zero/near-zero load ability and help US economy

[u2b]Tudbb1JRVRQ&feature=related[/u2b]
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      03-06-2010, 06:53 PM   #17
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Got my Wavetrac on the way.
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      03-07-2010, 02:16 AM   #18
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Quote:
Originally Posted by enrita View Post
as far as i know nobody in sweden has a 480 horsepower 335 or one at least big bigger turbos since you cannot get up to that number without them or Nitro.
But maybe this guy is off the forums or clubs.
Concerning LSD there is a huge difference between a real LSD and e-diff.

Try to pm Barry if u really know him, then u will know everything, his car was showed on Germany car magazine before
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      03-07-2010, 02:51 AM   #19
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Quote:
Originally Posted by JonLerd View Post
the only benefit i know of is that the wavetrac works when one wheel loses 100% of its traction where the quaife can not transmit any power to the opposite wheel when the slipping wheel loses 100% of its traction. Also word is that the wavetrac will have a unit available for those with AT and welded diffs in the upcoming months.
This is turning into quite a joke. No real world complaints about the quaife "opening" up, even with hundreds if not thousands of units running in icy conditions, on tracks, etc. Yet people observe one extraneous video and they go on regurgitating the same tripe like suddenly they're experts on the subject.

Honestly, makes me realize just how subjective the info you get on forums can be.
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      03-07-2010, 03:22 AM   #20
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Quote:
Originally Posted by MteK View Post
This is turning into quite a joke. No real world complaints about the quaife "opening" up, even with hundreds if not thousands of units running in icy conditions, on tracks, etc. Yet people observe one extraneous video and they go on regurgitating the same tripe like suddenly they're experts on the subject.

Honestly, makes me realize just how subjective the info you get on forums can be.
Not sure if you're reading the same thread. I certainly didn't read any one proclaiming to be an expert, OR making claims Quaife sucks in icy conditions, on tracks... etc. So instead of your useless 5 cents why don't you contribute something of value. If you have Quaife LSD do PLEASE provide your input on your experience PROS/CONS and etc.... Instead of shitting all over and pointing fingers...
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      03-07-2010, 09:51 AM   #21
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I think my reservations about wavetrac are that it is such a new company, so if you have problems, whose to say they will be around in 5 years? Quaife on the otherhand has been around for a while, so they are more likely to be here.
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      03-07-2010, 11:43 AM   #22
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I'm pretty sure that I'd just go with whichever or Wavetrac or Quaife was least expensive. Both seem like great options to me. I went with the Quaife since it was the only one available for my step 135.

The slight difference between the two is one might work better in crazy traction situations whereas the other has been around longer and is thus more proven. As far as someone saying it's barely an upgrade, that just make no sense at all. They are LSD's. I don't know much about some of these high end, racing, clutch type LSD's but a standard gear based LSD is infinitely better than an open differential with electronic nannies.

We don't have much ice down here but I'm confident that when we do my Quaife will be immensely helpful. I'm not the least bit concerned that it will suddenly quit working because suddenly I'll be in a zero traction situation. Likewise I doubt that would happen on the track enough to make most anyone other than an extreme race team need anything more.

If you want more traction, get a Quaife or Wavetrac, whichever is cheaper. It's expensive but no doubt it will work, especially on ice.
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