the redlin on the 8 is just put the for show a brand new RX8 will hit 13k withought thinking twice now i don't sugest you test this as i don't know how you drive but with a ballanced flywhell the renisis rotary will make 15k on the track and farther mods have it pushoing 800 hp on track na

when the that motor was being tested they had it on the dyno for 3 days 1 hole day it was run at 13k

in the old days the 12a rx7 you could drop a brick on the peddle and leave running while you went to have a beer point is a well ballanced rotary has little to no redline

and if you need more proof look up the mazda F1 car it's engine is a more advanced version of the renesis and as we all know the F1s run in the 14k rpms constantly hell even the old 787b had a rev limit over 10 k