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The OEM Integra Type R helical LSD is a solid upgrade over an open differential and makes for a smooth and trouble free unit. But for race conditions on a track specific build, the OE LSD has many shortcomings. Since FWD cars tax the front tires and grip substantially, being efficient with power delivery is critical. OS Giken is one of the top performance differential manufactures in the world, so teaming up with them for a custom tuned mechanical clutch type LSD for Project EF was not only exciting, but also an honor.
OS Giken differentials work off a negatively preloaded design, which means the diff is trying to stay unlocked as oppose to more common clutch type diffs that try to stay locked. This makes for a very drivable unit with minimal noise under normal conditions.
Another advantage is that the cam angle crosspins are cut at the exact same angle as the pressure ring. This increases the surface area on the ring allowing for smooth, gradual engagement and better communication to the driver. 
OS Giken implemented settings based on the build configuration of Project EF, and also input data from working with race teams that campaigned FF Honda's in the past who logged many race hours on OS Giken diffs. Among several settings that flew right over my head during explanation, the LSD is essentially a “1-way” set-up specific for my Honda's planned usage. 
Another change was the decision to go with a head containment seat for maximum safety in a potential wreck or impact. Thanks to Irvine based Race Technologies LLC, principal US distributor of Sablet safety products, the GT-160 fiberglass construction FIA race seat and Silver Series Hans specific 6 point race harness was used for Project EF. Sabelt has a rich history in WRC rally, Formula 1, and many other top echelon professional racing series. 
