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2011-2014 Mustangs
Exhaust
Headers worth it ??? Bolt on
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<blockquote data-quote="JohnRichard" data-source="post: 13717223" data-attributes="member: 156405"><p>OK Throttle Body… Boss intake</p><p>Boss Factory size 80mm</p><p>5.0 engine @ 7300rpms</p><p>The Throttle Body size in mm equals the square root of ((11978.8 x engine size in liters x RPM) divided by 67547)) = 80.0428 millimeters (3.1513 inches) is the best size for a street going car. It will provide the best power throughout the rpm range.</p><p></p><p>80.0428 * 1.15 = 92.04922 millimeters (3.623995 inches) is better for racing. 92.04922 is 15% bigger than the street going version and will provide more horsepower at higher rpm ranges. The drawback is it may cause poor idle and/or make it necessary to increase the idle rpm to make the engine idle smoothly. That, along with less power at lower rpms, is the reason most people do not drive cars with racing engines on the street.</p><p></p><p>Does that explain the TB size? Why not go with a 90mm TB on a NA Coyote? the whole paragraph above is your answer…</p><p></p><p></p><p>OK Throttle Body… GT intake</p><p>GT Factory size 80mm</p><p>5.0 engine @ 6500 RPMs</p><p>The Throttle Body size in mm equals the square root of ((11978.8 x 5 x 6500) divided by 67547))= 75.5296</p><p>75.5296 millimeters (2.9736 inches) is the best size for a street going car. It will provide the best power throughout the rpm range.</p><p>75.5296 * 1.15 = 86.85904 millimeters (3.41964 inches) is better for racing. 86.85904 is 15% bigger than the street going version and will provide more horsepower at higher rpm ranges. The drawback is it may cause poor idle and/or make it necessary to increase the idle rpm to make the engine idle smoothly. That, along with less power at lower rpms, is the reason most people do not drive cars with racing engines on the street.</p><p></p><p></p><p></p><p></p><p>I know this has nothing to do with headers being worth it or not...</p><p>Read This then you decide if headers are worth it or not... </p><p></p><p><a href="http://www.carcraft.com/techarticles/header_basics/" target="_blank">http://www.carcraft.com/techarticles/header_basics/</a></p></blockquote><p></p>
[QUOTE="JohnRichard, post: 13717223, member: 156405"] OK Throttle Body… Boss intake Boss Factory size 80mm 5.0 engine @ 7300rpms The Throttle Body size in mm equals the square root of ((11978.8 x engine size in liters x RPM) divided by 67547)) = 80.0428 millimeters (3.1513 inches) is the best size for a street going car. It will provide the best power throughout the rpm range. 80.0428 * 1.15 = 92.04922 millimeters (3.623995 inches) is better for racing. 92.04922 is 15% bigger than the street going version and will provide more horsepower at higher rpm ranges. The drawback is it may cause poor idle and/or make it necessary to increase the idle rpm to make the engine idle smoothly. That, along with less power at lower rpms, is the reason most people do not drive cars with racing engines on the street. Does that explain the TB size? Why not go with a 90mm TB on a NA Coyote? the whole paragraph above is your answer… OK Throttle Body… GT intake GT Factory size 80mm 5.0 engine @ 6500 RPMs The Throttle Body size in mm equals the square root of ((11978.8 x 5 x 6500) divided by 67547))= 75.5296 75.5296 millimeters (2.9736 inches) is the best size for a street going car. It will provide the best power throughout the rpm range. 75.5296 * 1.15 = 86.85904 millimeters (3.41964 inches) is better for racing. 86.85904 is 15% bigger than the street going version and will provide more horsepower at higher rpm ranges. The drawback is it may cause poor idle and/or make it necessary to increase the idle rpm to make the engine idle smoothly. That, along with less power at lower rpms, is the reason most people do not drive cars with racing engines on the street. I know this has nothing to do with headers being worth it or not... Read This then you decide if headers are worth it or not... [url]http://www.carcraft.com/techarticles/header_basics/[/url] [/QUOTE]
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