diffuser/venturi

[1303R]

hi, yeh i do like the idea of the small roof spoiler to break up the flow of air over the car. but i only know of one place in the uk that sells em and i don't wanna get anything from them! i do keep an eye out for other modern cars that may fit but not seen anything yet. may well make my own up out of fibreglass and carbon. i have a webasto style roof and that must help some to disrupt the flow thou for all i know may well be making it worse!