Graham Bell advocates a small flat airdam in his book. " Modern Engine Tuning".
It helps create an area of lower air pressure to allow under bonnet air to escape and not fight against under car air.
Anyone tried an extraction fan? Remember the Brabham " fan car" !
Gordon Murray genius!
I've got an air dam. Something like the attached.
Original article I got the idea from is
here. Note that this is the Google Chache version as the original is no longer online.
