I'll show you how to update the G-Sensor in your Nissan Skyline R34 GTR.
Update this sensor with a faster sensor to improve vehicle dynamics on throttle and braking. The DoLuck Tarzan G-Box has many settings to improve the gain, along with street and circuit modes. The DoLuck box can send signal out 30x faster to the ATTESA and ABS systems. Put power down earlier coming out of corners, and have less tail wag on hard braking when the rear lifts up.
This is installed on a BNR34 GTR Vspec 2, this car may or may not be different from your vehicle. The instructions should be similar for BNR32 and BCNR33.
Unfortunately, this GTR is far from ready for street use, but will make a sequel to this video when it is running once again.