Plated or Torque Biasing? What's the diff??? What differential do you need?

From the factory, the STI comes with a front and rear Gear-Type (Torque Biasing) differential, and these are one of the secrets of why the STI handles so well.

But what if you want to add those differentials to a WRX that didn't get them from the factory?  Or what if you are running past the limits of the Torque Biasing differentials?  

How would you tell and what would you want to replace them with?

When do you actually need a Plated LSD in the front or the rear?

We have talked in the past about how these types of differentials work, but what does it feel like?

For this video, now that we have a WRX with each type of front and rear differential installed, we are going to try to show you how the work and feel different, and which option would be best for a specific application?

Thanks for watching and Stay Tuned!

If you want more information about how each of these differentials work, check out this video that we made about Clutch Type differentials: