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SVT Shelby GT500
Overdrive Balancer
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<blockquote data-quote="Bad Company" data-source="post: 15366864" data-attributes="member: 141815"><p>This is an interesting question. First things first. Boost isn't a measurement of CFM of airflow. Boost is strictly a measurement of restriction placed upon the air as it moves from the Supercharger into the engine.</p><p></p><p>If you sit down and do the math to match CFM air flow or the more common way is Revolutions of the Supercharger to match Liters Per Revolution. With all things being equal in airflow exiting the supercharger throughout the complete RPM range of the engine, there shouldn't be any difference. Most people don't do the math to see if they are comparing apples to apples when it comes to the airflow in CFM or LPM exiting the supercharger with different pulley combinations when they change pulleys. So they may be moving more CFM of air with the larger diameter lower, yet they only see a small boost change and don't realize the gain was about gaining airflow, which intern caused the PCM to add more fuel. Which made more power and torque.</p></blockquote><p></p>
[QUOTE="Bad Company, post: 15366864, member: 141815"] This is an interesting question. First things first. Boost isn't a measurement of CFM of airflow. Boost is strictly a measurement of restriction placed upon the air as it moves from the Supercharger into the engine. If you sit down and do the math to match CFM air flow or the more common way is Revolutions of the Supercharger to match Liters Per Revolution. With all things being equal in airflow exiting the supercharger throughout the complete RPM range of the engine, there shouldn't be any difference. Most people don't do the math to see if they are comparing apples to apples when it comes to the airflow in CFM or LPM exiting the supercharger with different pulley combinations when they change pulleys. So they may be moving more CFM of air with the larger diameter lower, yet they only see a small boost change and don't realize the gain was about gaining airflow, which intern caused the PCM to add more fuel. Which made more power and torque. [/QUOTE]
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