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I understood a rear diffusor in the way you described but from a different point of view. You're right about the air being slowed down in the diffusor. As the slowed down air exits the diffusor it will be 'thrilled' or sucked out/speed up by the air not passing the underbody at the rear. This will speed the slowed down air in the diffusor up and this air speed the one in the underbody up too which finally results in downforce on the chassis. Did I explain it complicated enough? Am I right or completely wrong? :wink:

[QUOTE="goldNSX, post: 1387794, member: 10201"] I understood a rear diffusor in the way you described but from a different point of view. You're right about the air being slowed down in the diffusor. As the slowed down air exits the diffusor it will be 'thrilled' or sucked out/speed up by the air not passing the underbody at the rear. This will speed the slowed down air in the diffusor up and this air speed the one in the underbody up too which finally results in downforce on the chassis. Did I explain it complicated enough? :) Am I right or completely wrong? :wink: [/QUOTE]

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