Yes you may well be correct about the WOT on later turbos, earlier 2.4lh had fuel enrichment, the map for it exists in the bins I've looked through.
It was noted by a guy in the USA who had a 240 that changing the setting between grounded and not while the engine was running caused him issues such as hesitant acceleration etc.
I can only assume it's as you say software, all Volvo EZKs for whatever reason have the map duplicated four times within the bin usually pulling from the third in the bin.
It's possible grounding it while running causes something to go iffy.
As you say running super unleaded means you can just leave it grounded at all times anyway.
I wasn't sure if you intended to have the option between both standard and advanced with a switchable toggle when turning LPG on.
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