Tarzan Yamada drives my car at Honjo Circuit to demonstrate the difference between the standard "normal" Do-Luck digital G-sensor and his Tarzan G-Box. I won't comment on the difference the G-Box makes, except to say that it is hard to understand the difference in the braking, because that really has to be felt. But you CAN see how the car is more stable on this small circuit - although Tarzan does say that he can take the car to its limits better because he knows what the G-Box is capable of.
Anyway - if you've ever wondered what it's like to be sitting next to a pro who shows you what your car is truly capable of, let me tell you it is simply amazing! And, highly recommended... some of us (myself included) should spend more time and money improving our own driving skills, than trying to mod our cars to perfection...
And yes, I know my 3-4th gear is on its way out...
Some final thoughts about these new digital G-sensors, based on questions I have received since my first two posts:
1) The ATTESA computer is fine, and does not need to be upgraded or replaced. Ito-san told me that "even the R32 ATTESA computer was way ahead of its time. It is really a magnificent piece of work." There is a difference in the V-Spec and standard ATTESA computers (because the V-spec has the active rear LSD), but even the standard ATTESA is a superior product. And remember the ATTESA computer not only gets input from the G-sensor, but also is wired into the car's engine ECU and ABS systems.
2) According to Ito-san, the "bottleneck" is the OEM G-sensor - especially if in an older car. The digital ones promise not only digital precision and no parts to wear out, but respond 30 times faster in the R32/R33, and 15 times faster in the R34.
3) Once the OEM G-sensor has been replaced with a digital one, the next area owners should examine is the transfer. Ito-san told me that adding additional plates, torquing up the transfer, would reduce slip and get engine torque to the wheels even better.
4) As of this writing, there are 4 digital G-sensors on the market here in Japan. Both Midori Seibi and Do-Luck have their "standard" replacement digital G-sensors, designed essentially to replace aging OEM units for a fraction of the price, and provide consistent inputs to the ATTESA. This alone should bring back the ATTESA's capacity as if it were brand new. Midori Seibi has their "Midori-Spec" -an all around more aggressive version, and Do-Luck has the Tarzan G-Box. The Tarzan Box is the only one of these 4 that has been specifically "tuned" using input from a racing driver. Tarzan Yamada spent months testing the unit out in varying conditions, roads and weather.
5) Naturally, people want to know if there is no need to even consider the standard digital G-sensors. I would say that if you are almost never on the track, then this version is fine and you don't need the Midori Spec or the Tarzan G-Box. OR, if you are a purist and want to experience the GT-R as Nissan intended, the standard version is the one for you. And, before people ask, I really don't have much if any experience with the Midori-Spec unit. The description states that it gets the torque to the front wheels more aggressively than the standard version, but I would have to drive on the track with one to give any kind of honest feedback.
6) Despite his racer reputation, Tarzan Yamada wants people to know that his "tune" is designed to make the cars easier and safer to drive fast, by anyone - you don't have to be a race driver to enjoy the benefits.
7) As of this writing, the only place to purchase the Tarzan G-Box is via Do-Luck, and in Europe, through my friend Wouter's company (See first post). Ito-san tells me he is working on increasing the number of dealers worldwide who will carry the product - and hints that Sumo Power will do so soon in the UK.
As always, if you have questions I would be happy to answer them. Leave a comment!
Hope everyone enjoyed the video!