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Well, actually i'm running with more (full open valve and i do not even cool the gases) but that's not the point because i just want to lower the power output from the engine and use the heat also to help making a good gasoline/air/egr mixture. On my daily needs i do not need to drive like i'm racing. For the "mix" i use 2 stainless steel meshes: after egr/air and after INJECTION. That's why i found myself a mono/single injector car on purpose. When you use more hot egr, you loose power/pressure in the cilinders, not exactly save fuel... that's why you can run it LEANER AND AlSO PUTTING MORE COMPRESSION without pre-ignitions. ONLY then you'll see fuel economy. At least this is what i found from experience... regards!
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