Airflow problems, need opinions...

[Panelfantastic]

Most of you know about my bus with the Ecotec. I'm having problems moving enough air at speed to keep it cooled down. At idle it does fine, will cool right down, but cruising, it heats up. My bus is a panel with the divider right behind the seats that seperates the cargo area from the front, if I take the divider down and run with the safaris up/open, it runs cool as can be... but I don't want to run that way all the time. The cargo area is too noisy and sometimes the safaris are too much (interstate driving) so I need a new plan.

How I bring in air is from single NACAs on each side... I even added small "eyebrows" to them to try and help...


I'm thinking of going to double sized NACAs and a more extreme hood...




How do I know if I'm making a tall enough scoop?

I even tried a small roof scoop which did absolutely nothing !! It would have to be 2-3 times taller to get in the airflow... Why in the hell didn't one of you stop me from doing that???



Ideas? thoughts? comments?