KTuner.com

How do I remove Speed Limiter?
"Speed limiter completely removed. Please adhere to your tire speed limitations and note this feature is for off-road use only."
this is from the Ktuner Faq for TL.

As that states, it's completely removed from the ECU already. That would be the hard coded limit where throttle is dropped and fuel is cut.

If you have an Automatic unfortunately your transmission controller may still upshift you into a higher gear leaving you unable to climb due to lack of power. We don't alter transmission control in any way.