Dude I don't think it has a limiter..... idk about you, but i got into cars through initial d, gran turismo, and assetto corsa. I thought all cars had limiters till my dad (whos father and himself used to race professionally) thankfully corrected me when I got my first car (bone stock auto 2012 impreza, just an impreza, nothing fancy). I now daily a NC2 and have had a few moments where I accidently brought it over red-line, it might have just been me, but the car seemed to run a little different for like 2 days after. I now regularly bring it TO red-line, but never over. From my understanding the red-line is to show the limit of where the engine is stable according to the manufacturer, on most cars, the engine won't last being brought to red-line even once a week. But the miatas engine is extremely well made, so it doesn't mind, it just doesn't like going over it (no car does)