Post 30 in the link that was provided, QUOTED "I am reviving this old thread because of a conversation I had with Kelleman USA (Denver) yesterday. He told me the cheapest free HP is removing not only this screen but also the plastic baffles in the lower section. they said it made 10hp on every car they did it too." END QUOTED. This looks like a 'reported' to me. It may not be 100% exactly 10HP, what is?, but it is free and didn't take too long to do it.

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