Hello guys, Just wondering on the glanza V I'm sure everyone knows it has a High and Low boost button, whats the point in this? i know obviously it changes it to high and low.. but i mean does it save petrol or help save the turbo... etc.. Can someone here explain the point of it.. plus whats best to save petrol. Keeping it in low or high.. and for the turbo life span is it better kept in low... obviously when i get this little chavs come next to me.. i turn it on.. and bye bye corsa!!! lol cheers guys hope you can help