Originally Posted by Jordo!

Ask them how much timing was advanced. From my own dyno expereince, the Z doesn't seem to like much extra timing up top, so it may only have a degree or two -- that should be okay -- but best to check with your tuner.

I've been told that the motor has a pretty excellent knock detection system, and can adjust timing and VVEL to keep the motor running safely, so it may not matter at all.

At worst, it's a simple matter of just scaling back the ignition map by 1 degree at full tilt for extra safety.

That said, if the temps are getting cooler out in your area, you have even less to worry about.