WHAT IS LSPI? Piston Damage LSPI is another version of engine knock, which has been around since engines were invented. In this case, it occurs under low-speed, high-torque conditions in turbocharged gasoline direct-injected engines and is more destructive than typical engine knock. Under normal operation, spark-triggered ignition is timed to work in tandem with downwardRead more about What is LSPI[…]