Speed Limiter Eliminator

Not asking how to remove it, totally different area here. So latley, dont know if you heard, but both HKS and SARD racing have come out with what they call Speed Limit Eliminators, essentially it is as stated, it takes off the speed limiter off the car, they go for around 120-140, wondering if anyone has had any experience or has thought about this route.

Drop in an automatic ecu in your car. Assuming you car is 5speed. It may raise your idle by 100+/-. As for the sard and hks, I'll ask my friend, its on a supra though.

Thanks, appreciate it.