A Dodson anti-surge baffle was installed in the pan to further reduce the chances of the transmission oil pump sucking up air. We are also installing Boost Logics breather tank overfill kit which will allow us to add two more quarts to the oil capacity which makes sucking air just about impossible.
Sheptrans adds 4 more magnets to the transmission pan to fortify the two that come stock with the car. The selector piston magnets tend to collect metallic debris which can prevent their sensor from detecting piston movent which causes the transmission to go into limp mode and these magnets will help collect the magnetic particles before the piston magnetic strips will.
To give the rear wheels of the car positive locking, we replaced the stock differential with an Overtake Saikou 1.5-way rear limited-slip differential from Bulletproof Automotive.
The Overtake Saikou differential is a Salisbury style that uses a combination of cone washers and ramps and cams to apply force on multi-plate clutches inside the diff to provide limited-slip action. The more one wheel wants to slip, the more locking force is applied by the differential. The differential is made to Overtake Saikou’s specs by Drexler Motorsports, a maker of diffs used in DTM, FIA GT, prototype, and formula cars. It is calibrated to have aggressive locking but not to freak out the GT-R’s electronics.