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Why would I cut my bumper? Simply put, your Miata’s rear bumper acts as a parachute. This can slow you down, increase lift, and reduce gas mileage. However, for most Miata owners these issues are hardly noticeable, and this mod will mostly be for aesthetics.  The size of the cut will also make a difference, but because I primarily drive my car on the street, my cut is designed to be simple, clean, and provide enough space for a rear diffuser. If you look around at the serious race Miata’s, you’ll find that most people just remove the rear bumper entirely...

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There is a lot of misconception about the purpose of hood louvers, and where to place them on your car for the best results. Unfortunately we see a lot of people placing their louvers in a location that will actually suck air into the engine bay, causing over heating and front end lift. The purpose of these hood louvers is to vent hot air out of the engine bay to help avoid over heating your car at the track.  Venting the hot air out makes your heat ex-changers more effective(radiator, intercooler, oil cooler) by allowing more air to be pulled through them....

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