What is the boost level set to on the MazdaSpeed Protegé?
Depending on conditions, it is set to have boost up to 9 psi (0.62bar) and is controlled via a mechanical wastegate. Normal boost pressure is around 6psi (0.41 bar). When a knock is detected (even if it is not due to low octane fuel), ignition timing and fuel are both cut back at the same time. © 2001-2010 Edwin Man et al. All rights reserved. No part maybe reproduced in any format without permission.