Dave,
Very nice piece of work, (we wouldn't expect anything else from you of course) I tried similar but could get it to work, too much turbulence Maybe made it too narrow. Hope yours works better. I also tried a contraption with the dreaded mesh (the Audi look) Worked much better, I guess it allows for some equalisation of the pressures, but It is not very pretty. Strictly for long motorway trips. JJW
