Hondata

Here's a link

http://www.learntotune.com/discussions/ ... decel-cut/

"Some ECUs will allow the timing to be retarded during overrun fuel cut off while others don’t. This can help reduce engine torque, making the engine less responsive which in turn can make the transition to fuel cut and back off it feel smoother"

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Per the Help the Ignition Tip-In Retard is to prevent detonation.

Can it (Ignition Tip-In Retard) also be used to tune "smoothness" between decel and light cruise (where you have a lighter than stock rotating assembly set-up)

Is more or longer ignition retard required to compensate for a lighter rotating assembly set-up?


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Also does this function work on cruise-to-decel ("tip-out") or only on tip-in?

This is something you will have to try using trial and error to see what works best for you.