I would recommend fabricating some sort of hood vent like you see in the picture, towards the front of the hood. I would honestly just use a dremel tool to cut open a square and lift the exposed metal up facing towards the windshield sort of acting like a vented flap. This is going to help increase radiator flow while removing much of the heatsoak you might find going on underneath the hood. In my opinion this is crucial for BMW's because they run so hot, even if it is warm outside and you are driving normally!
|