[24MaroSS]

Based on ZL1Tommy videos (stock dyno, dyno runs with upgrades ) and J Hennessey doing roll ons and dyno vids, I would assume these videos were done well before 1500 and these cars dont appearto be 'detuned' before that mark at all.

Now in my experience, with a BMW S1K, it was 'detuned' because it actually had a different rev limiter that could only be unlocked by a tool (tuner) supplied by a dealer so it maxed at 125mph at like 7k RPM every gear.

I dont "think" we have detuned cars from the factory. I "think" 1500 is just a safety measure so consumers dont go out and immediately pin it balls to the wall.