My TD5 D2 would loose a lot of power on hot days until a larger I/C was fitted, indicating that the ecm logic of reducing power if the I/C didn't drop the inlet air temperature sufficiently was invoked. I removed the driving lights from the D4 for the summer because I also have insect mesh and didn't like the idea of having double restriction. The availability of some extra light in summer wasn't worth the risk of possibly damaging the engine, but I'll never know if removal was needed because I'll never test it.
				
			 
			
		 
			
				
			
			
				MY21.5 L405 D350 Vogue SE with 19s.  Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
			
			
		 
	
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