I had one on my manual C7 Corvette and I liked it, but that engine is way different than ours.
I don't think I would like it on my manual trans performance model Z. The weird throttle responses on these has more to do with the turbos and the tuning. I could see the pedal commander actually...
As others have said, any low sleek car is not as easy to see as a "regular" vehicle. You gotta be extra thoughtful about where you park, at intersections, etc
The atmosphere is 80% nitrogen. That said, no there is not a reason to run higher pressure. In a race setting the nitrogen filled tires won't gain pressure from temperature as much as air filled tires, but the optimal pressure is a mechanical phenomenon not dependent on the gas used.
Depending on their dyno and settings, you'll see between 340 and 390. As long as you use that dyno and tuner, you'll know your gains relative to your baseline.
My favorite is how you can find all kinds of hate for all the unnecessary electronics, modes, sensors, etc on modern cars, with calls (especially among BMW guys) for a simple no fuss drivers car that is like the M cars 20+ years ago. Then Nissan does it and it is "dated" and "sparsely equipped"...
Ok. What I was thinking is sometimes the stock studs are long enough that they will protrude beyond the spacer and interfere with the back of the wheel. They were like that on my miata and I had to trim the studs.
I have the manual so my vote is obvious. If I have any gripe its the rev hang (revs want to stay up when you let off to shift) but you get used to timing it. The trans shifts nice and positive, the clutch is light and predictable.
Quality tools and a layer of tape is about the best you're going to do. In the end, the hex portion is meant to have a wrench on it and force applied to it.
Traction control and stability management aren't magic. You can get any sporty rear wheel drive car sideways in a jiffy if your inputs are jerky and ill timed.
Performance trim here, been noticing the car kinda wants to wander like you have to keep making slight steering corrections to hold the car on line. I measured the front alignment and it was about 1mm of toe in on each side. I adjusted to zero and it calmed that behavior down a lot. Just an fyi...
There are people who are able to comfortably keep the car on the edge of traction, and are able to control it when it spins the tires. They understand how to drive the car on the limit of whatever tire is on the car without it getting "squirrely".
I was just (2 hours ago) driving a Ferrari 296 GTB with those tires on it (Xtreme Xperience laps my daughter got me for my birthday) and they were planted. That car has over 800hp. If you need more grip than those have on a street car, I am not sure what to tell ya.