O.S. Giken "DualCore" LSD

OptionZero

Just reading through some diff threads for other platforms

BMW M3 crowd has a guy that is a diff expert, tests off the shelf and builds custom setups.

consensus from track crowd was that OS Giken did not lock hard enough out the box and needed to be upgraded to more aggressive specs

interesting because I had not heard that from z34 track guys - who, to be fair, may not be putting out the same power

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OptionZero Build Thread

Rusty

Mine needs redone.

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浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
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Spooler

I went that route. Tuned by OS Giken themselves.

prandelia

I keep up with the E92 M3 crowd, and general consensus for the most part is the Giken OTS setup is great for track use. Some of that is because almost all owners don't really spend alot of resources to make much more power over stock, they focus on handling. Also, that car is tire limited really due to the body design. The exact opposite is true for the Z, most owners try to make considerably more power over stock, and the car can easily be over-"tired" due to the big body design. For the tire we can stuff under this car, it really needs to be making like 375 whp+. Not feasible for us NA track guys, unless you want to build a crazy 3.8L like the GT4 cars in Europe ran!

I've got a spare diff pumpkin just waiting to be rebuilt with a Giken for my M3, but just haven't gotten around to it. Knowing this though, I will certainly check into it before pulling the trigger for that car.

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2014-Nismo 370Z / 2025-992 GT3RS / 2024-C8 Z07 / 2018-991.2 GT3 / 2011-997.2 GT3RS / 2016-981 GT4 / 2013-E92 M3 / 1988-E30 M3 / 2015-FRS - GLTC race car