[setasai]

That is weird. Cutting out at high speeds and bumps indicates a mechanical failure but the fact that you can bring them back every time by cycling the key means its a software issue. Maybe the ballasts are being funky (no better word to describe something I'm not sure of). Like the high speeds and bumps cause a small short or surge that trips an electronic safety and then the key cycle is like a form of reset cycle.

FYI about the MAP sensor, the empty fuel filter works well as a chamber to keep the gas at bay. If you find the puddle shifts around up and down the tube, it might be worthwhile putting one of these in the line angled so that gas can never get past it. Just another safety. It's not a big deal but being stranded because of a wet sensor stinks since it takes hours for it to dry.