Quote:
Originally Posted by euromodder
Which may not go down well with the catalyst ...
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(Referring specifically to bump starting): Why is that different to turning the engine over on the starter?
Quote:
Originally Posted by RedDevil
My car does a kind of EOC coasting all by itself. The engine does not really shut off, but the valves will open completely and no gas is injected so the pistons move freely in clean air.
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Are the valves open or are they closed? From the point of view of reducing pumping loss and air cooling the catalytic convertor, I'd say they're closed if they are being disabled.
Something else: The premise behind pulse and glide is to operate the engine at high load. I expect that is also going to wear out the engine faster than operating at 'normal' loads. Against that the duty cycle is lower.