You can't really extract more performance from your lipos with any "tricks". Some chargers have a competition mode that will charge them to the legal max voltage instead of the standard cut-off (i.e. 8.44 instead of 8.40) but otherwise, a charge is a charge on lipos and their performance is related to their manufactured specs, not anything you can do with them.

What you can do is ruin your lipos. So, the tips/tricks you read were probably related to never ever leave them plugged into your car overnight, store them with a storage charge if you won't be using them for more than few weeks, balance charge at least every 10 or so cycles, etc.