Looks to be low in my opinion.
You may want to show the tuner my dyno numbers
We're close on mods and I don't think you should've been that low. I was on a UpRev tune.
DynoPac's are notoriously generous in their readings so I don't know whats up with your numbers.
N/A HP BRAG thread
As for off idle revving? The Z isn't supposed to rev past 4k off idle.
You need to hold the clutch in and keep it in gear to bypass the Anti-rev engine feature.