Its interesting to read the Wavetrac official description, specifically stating that in "zero load" conditions, such as when a wheel lifts off the ground, or 1 wheel is on ice patch, ONLY WAVETrac will deliver the torque to the wheel with grip, thanks to the special device:

http://www.wavetrac.net/different/

 

Found more info, on RRE website.
It talks about friction material indeed..and preload.

So I'll try the alternate setup - stiffer - and hope it does not wear out in 1000 miles.

http://www.roadraceengineering.com/e...e-moreinfo.htm

 

That does not sound fun for those of us that are more casual about our track days.

 

 

Exactly . If I ever had to replace (knocking on wood), I'd be shopping Wavetrac or Quaife. Ripping out a differential for regular maintenance is not something I'm interested in.

 

How often have you had to pull apart your rear diff for rebuild? Its not like these are rebuilt every year and will wear less as a casual duty car. Mine hasn't come out in 3 years, checked load this winter and still holding the same as when it went it.

 

Once in 130k mi and it's a lot easier to get to than a front at diff. I'd rather do 20 rear than one front.
😂

 

I think a front takes like 90min or so. Basically just have to pull the axle and then the side cover comes right off. Might be something else in the way but both times I pulled mine apart it was pretty easy. Hardest part was lining back up the ACD plates.

 

Had a friend that had a sponsorship with MFactory give them a call today and it sounds like they have no intent to offer anything for us 8/9 owners.

My buddy that has done the majority of work and fabrication on my car lectured me pretty hard today that the Cusco unit was the better way to go even if the Mfactory one was available. Of course that is probably easy for him to say because I'm the one paying for it :P

 

would only put cusco or osg in our cars

 

bumping this - thinking about getting an ATS 1-way in the front is it true the t-case doesn't have to be dropped?

Does this make a big difference in handling vs the helical unit? I didn't think the helica unit caused any kind of binding up front.

 

Yes, you can swap the front diff in the car. You just have to make sure you get the ACD plates stack lined back up so it all goes back together right.

 

Andy Smedegard is most accomplished hands-on racer using ATS front LSD, who is best to give us feedback.

His baseline was OEM RS front torsen type and typical RS OEM plated LSD rear.
His accomplishments, talent, and hands-on experience, render him great resource of information.

 

bumping this - who even sells the ATS diffs? there are a bunch of variations too it seems, not sure which to get...

 

TRE supports Andy, so Jon got him the ATS and installed it.

I always wonder why these diffs supposedly "need setup", i.e. ATS, Cusco, should set them up from new for close to optimal application for typical Evo racer obviously.

The way I read some "reports" such as even MotoIQ articles, and feedback by TRE, or by some English drivetrain spacialists, there is always talk about setting up, how they come "out of the box" "requiring setup", or they suck... not sure what to say, but...
I imagine Cusco, ATS, and OSG, know more about diffs than any shop will ever know: its hard to imagine they are so competent in design, manufacturing, figuring out what should you have, and creating the product for the purpose - that has proven to work,
And than supplying you new product totally mis-matched in configuration.

Just venting an observation.