I just fitted a Kammback to my Aygo, on my drive home from work today I managed to get a new economy record of 81.5mpg (Imp) before my best was 78mpg (Imp)
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I've also got an upper grill block where air is directed over the engine and around where the intake is (the grill block increases Intake air temp and stops fresh cool air getting in, on a long drive the intake temp can get upto 40*C)
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