[Dust]

The point of part throttle injection is two fold. First, as mentioned in my low flow diesel thread, to increase MPG, and second, to decrease heat soak based power reduction. The Cruze has a small FMIC mounted between the AC condenser and radiator. Many complain about severe lack of power in stop and go traffic. If this is an "octane", or timing pull due to knocking problem, spraying at low IDC can be helpful at direct port locations. If it is a software problem that pulls timing everywhere, then the spray can still be useful, but not in the direct port location. Nozzle would have to go before the TMAP.