HI Bob
Thanks for the reply and the nice picture - looks great, and sounds like a good idea
No, I do not have a diffuser. (yet

)
On the enclosed picture you can see a soluton from a bmw 2002 - the other end of the black tube is in the front...
I was thinking of a kind of reversed turkey pan mounted on the back side of the hood - allowing air to be forced down the intake... and at the same time stop the air form passing too fast over the intahe and create the drag you mention... and maybe have a tube conected from the front to force more air into the top of the intake.
