Hi ubyte, :lol: I don't see how the air be colder coming from underneath or through the front of the vehicle compared to the air flow over the bonnet. I think you will find that the way the cars are designed that there would be more air travelling over the bonnet of the car than could find it's way up though head light cavaties and past radiators intercoolers and air conditioner heat exchanges ect. I would think that the air velocity going over the bonnet would act as a coolant as well. The bonnet scoop would trap this colder air and force it directly to the turbo, which is what I was trying to achieve. The factory system relies on the turbo to suck the air from the front of the car through the air box & filter then over the hot engine via crossover then past the hotest part of the engine the exhaust side of the motor, too finally reach it's desination, the turbo. If you think this is more efficient than what I've done, maybe I've wasted my time and money. :lol: Be happy to be corrected if their are any engineers or physists out there macka