Presumably, adding steam to the EGR flow could keep the EGR valve and its body cleaner, and dillute the oily vapors from the crankcase vents more accurately instead of turning it into a sticky residue that accumulates on the intake manifold walls. Even though it's not nearly as problematic as in Diesel engines, since you're using LPG it becomes harder to clean up those residues than when you're using gasoline.
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Originally Posted by teoman
Any benefit to monitoring the EGR valve actuation and adding a bit of steam to it?
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I thought that monitoring the EGR valve in order to keep its actuation and the addition of steam at a proportionate ratio. BTW do you have any plan to monitor the relative humidity of the intake air stream in order to keep it more constant at a sweet spot?