Quote:
Originally Posted by euromodder
Unless the vehicle has a squarish rear end (think squared off hatchbacks, station wagons, vans) where any diffusor angle wil increase drag !
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Do you have a reference for this? I have never seen anything (to my recollection) that counters the work shown in Hucho's book. I am not saying you are wrong (since aerodynamics is often counterintuitive even to the experienced), I just can't think of a reason why a diffuser would make things worse. I would actually think the bigger the back end, the more of a positive effect it would have. Thanks.