Change History

the DFI's liquid-to-atomized spray is cooler than an "inducted " mixture, and stays cooler longer in the combustion chamber until ignition. So although the actual combustion temperature is still high/equal, the cylinder walls, piston crowns, valves stay cooler. If one imagines the soot as a form of condensate, perhaps it forms bigger, heavier particles with DFI, and therefore it's more prone to remain in the exhaust system.

the DFI's liquid-to-atomized spray is cooler than an inducted mixture, and stays cooler longer in the combustion chamber until ignition. So although the actual combustion temperature is still high/equal, the cylinder walls, piston crowns, valves stay cooler. If one imagines the soot as a form of condensate, perhaps it forms bigger, heavier particles with DFI, and therefore it's more prone to remain in the exhaust system.