Originally Posted by EvilCrayon

Didn't want to start a new thread about tracking the Nismo but after owning mine for a little over 2 years now, I'd like to take some time to talk about small upgrades that really shine on the track. Mostly because I am interested in making my first few modifications and am only interested in quality items. I would like to be able to say I've pushed the limits of the stock Nismo before I modified anything.

First and foremost is the stock VLSD and obviously it's pretty good for daily street driving but it could be better. I'm torn between choosing from Kaaz/Quaife/Cusco and choosing the Nismo GT PRO LSD. The ability to adjust the intial torque to 1 of 3 settings without even messing with the clutch plates is something I'm interested in. I also like Nismo parts as they're engineered around my car. However, I've always liked Cusco RS differentials and Kaaz always makes great setups as a good price. Even more exotic is Drexler and although I've never had first hand experience with it, I only hear great things.

Another potential weakness is the car's VDC/TSC system. I've looked into the Whiteline Black Box setup but haven't heard any feedback from the Z community. It looks like it works great and might work great at the track in conjunction with a differential cooler and finned differential cover. I haven't heard how it will work with an aftermarket LSD as I think the VLSD plays a role in the VDC/TSC system.

Weaknesses of the car in my eyes right now:
-VLSD is only good for a few laps before it starts to overheat
-Tires could use more meat, 265 on front and 285 on the rears?
-Traction control kills my fun. It is extremely abrupt compared to the more refined TSC in the 370Z

Strong points:
-Well balanced, neutral handling rewards controlled throttle inputs
-Brakes are amazing and with track-oriented pads, fade free.
-Heel and toe-ing feels so natural in this car; every perfectly rev-matched downshift brings a smile to my face.

Originally Posted by Ataru074

probably you're going just plain slow and not stressing the car...
if you start pushing you'll have overheating all over the place, from the diff to the engine coolant and oil.