Are you sure it's the rev limiter and not the traction control kicking in ?

If it only happens on the 1-2 upshift that sounds like the traction control.

Try turning off the TC button on the console and do a WOT run.

If you hit the 1-2 shift at full throttle and the tires start to break loose the traction control will cut fuel and retard spark trying to regain traction.

Slim