Limited slip diff?
 

I got a '10 z roadster touring AT but I'm wondering did it come with LSD? or VLSD as its known now? I saw it comes with sport models but man do i need it? anyway to add it or would it cost way to much? thanx ahead of time.

I believe only the sport package and Nismo editions come with VLSD. But it's not a very good LSD for anything other than DD. If you really need LSD, don't get the OEM version. There are a few good aftermarket options that are far superior.

I have a '10 Touring + Sport, and it has VLSD. However, to be honest, vlsd and lsd isn't a big deal for DD.

Also, the OEM LSD is not all that either.
It is better than nothing I suppose.

If you have the sport package then you have a VLSD. Like others said...its not great but at least you get power to both wheels.

You can go aftermarket like i did since my roadster was touring non sport. I did a Quaife LSD with 4.08 gears. Car accelerates so much faster now!