Originally Posted by NissanTracker

Was trying out the launch control feature in UpRev on the HR nismo. Second pull was pretty good. Tires just hooked up,, but I now have a whining noise that appears that it's coming from the rear diff? It's not super loud, but if I keep it at 3k rpms I can hear it occasionally. Wonder if I just Fried it. Any thoughts? Noise was never there before.

60k miles and I used redline mt-85. Maybe only 10k miles after diff. Oil change.