G37V

I had a custom made valve exhaust befor, it makes my vert slower so I'v got Meisterschaft end exhaust with custom made down pipe and mide pipe it makes better respons at lower rpm and also I upgraded my brake system as you guys know oure brake system is not enugh to use for performance driving, I think brake caliper is enugh to use at street performance drive but brake disk is sucks, it always disk bended and makes car vibrate when I braking after 60MH. so Infiniti service center trying to changed my disk for free 2times but it still happened so I resolved to upgrade my brake system. I baught Stoptech steel brake line, Hawk brake pad, Stoptech drilled and sloted brake disk, Ash type-s brake fluid.after I finished upgraded brake system it's much better braking at high speed(after 60MH). and It looks much better than stock brake disk at exterior.