I am trying to tune the car for a flat AFR across my rpm range but am wondering if it is safe for the car to hit the rev limiter at 9.5k rpm whilst doing a run?
The engine is built safely to rev to that rpm.. Will hitting the rev limiter be an unwise thing to do if I would like to tune my AFR to that rpm limit?
Hitting the rev limiter near redline is never a good thing. You do not need to hit the rev lmiter in order to tune the fuel - just get the fuel right up to the rev limiter, and then make sure the fuel tables are flat beyond that point.