I understand the reason for running end plates, both for preventing spillage and for reducing vortex effect. However, I have started seeing some cars run a cutout end plate, as shown (hopefully). The leading edge has a full hieght end plate, but it has a spill plate towards the trailing edge...
A friend posted this elsewhere, and thought we might get better results here.
In general, is there a reasonable increase in power by simply increasing octane and spark advance. I realize higher octane fuels (lets say 100 unleaded vs 93 unleaded) often have less energy content and slower burn...