Originally Posted by Eclipz

You would need turbos designed to flow efficiently at that high an rpm, which I think would be difficult. For example, in an interview with an engineer for the ferrari 488 gtb said they limited the rpm to 8k because the turbos couldnt keep up and it would be spinning the motor more without making anymore power.

But dont get me wrong, if I could have a 9k TT Z I would rev to redline even if it doesnt make more power