Like a nice set of headlights you want to show them off. Ladies please no letters! Why do you want to cover them. Our vehicles are designed a certain way for a reason, but that said, heat coming off Exaust does better when taped off and sealed with asbestos tape. For performance engines, you can gain as much as 8 horse power by wrapping your headers, but just covering the heat from escaping will push it back towards the engine compartment, not good. Excessive heat funneled back, into engine bay, makes fuel/ air ratio too hot. If you ever watch a drag race, they always post lowest E.TS. When the part of the day is coolest, and fuel dialed in for that. One of the best horsepower techniques is to mount a cone K&N filter in the fender well, where incoming air is coolest and densest. Just my opinion, but don't cover it up. You could do like Auburn/ Cord did back in the 30's and put beautiful chrome pipes cut into your fender wells. Bottom line, leave it alone!
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