I've never worried about it to be honest, I did map the LPG system to get it back running 100%, when I bought her it would lean out and almost die at over 3000rpm check that the petrol side is running perfect first. Lambda's switching, MAF airflow numbers correct, trims in the right place, all that sort of stuff.
Before doing any mapping work you need to ensure the petrol side is as good as you can get. Then see how it performs as a multipoint system slaves off the petrol side, also worth noting problems with the LPG ECU aren't unheard of.. They can lose mapping info when the battery is disconnected when they're old for eggsample, so if the problem's as simple as that a remap may be an almost total cure (save for the fact the map would be lost next time battery is disconnected). If you have LP issues though it is far more likely there's an issue with the reducer, injectors, pressure sensors, temp sensors, in which case mapping won't fix it but the interface will allow you to see readings and (likely) allow you to switch individual cylinders back to petrol (to find problems with individual LPG injectors) for example
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