Pulse and Glide with the engine running?

[DRW]

Yes, Lean burn will complicate things.
My car has lean burn, although it works differently than the lean burn mode in a VX.

I noticed no benefit to P+G on flat ground, regardless if the engine was on or off during the glide. This is because holding a steady/light throttle lets the ecu use very lean A/F ratios. The 'pulse' portion of P+G uses heavier throttle and the ecu uses a richer A/F ratio at this time.