rolling the CAL your making isnt going to help, as far as i know. It just take the air longer to get to the engine..
the best thing u could do is get a heatsheild from luckas bimmer.. its made of OEM bmw ABS plastic.. so its it doesnt attract heat like most aluminum cheap heatshields.. Unfortunetly his site is down for the for the time, but i bet u could find him selling one off of ebay. U just have to do a little cutting (nothing bad) to make it fit since its made for 88+
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PATRIOT, n. One who loves his country, and zealously supports its authority
"I had made it clear to the world that either you're with us or you're with the enemy, and that doctrine still stands"