its a good idea to have one. but if its slammed your probably going to have a split tank as soon as the engine stops the triger wires dead. or if your unlucky to roll it they dont run upside down. ive thought about using a pug 306 one there pretty reliable not so tempermental. ive two new ones over the years they seem to be more dangerous with it on i hit a pothole middle lane of the m1 stopped it dead just managed to get it on the hard shoulder some old women nearly rear ended me in town with the other one going over a speed hump