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2015+ S550 Mustangs
2015+ S550 Mustang Talk
CatBack Systems Losing Power
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<blockquote data-quote="Voltwings" data-source="post: 14589372" data-attributes="member: 155561"><p>This ^^</p><p></p><p></p><p></p><p></p><p>Torque is a derivative of velocity; how fast air both enters and leaves the cylinder. A larger exhaust will cause velocity to slow, which will lower torque, BUT it allows the higher end to flow at a greater velocity (where the smaller pipe was previously a "restriction") which should allow greater top end torque. HP is a derivative of torque, so more torque at a given point = more HP. On paper there is no reason for the car to be losing horse power. </p><p></p><p>Secondly, air coming into the system is still measured at the MAF, and the Catback is far enough downstream of the o2s that nothing there should be effecting them as well. This is the ECU stepping in and doing some funky stuff.</p></blockquote><p></p>
[QUOTE="Voltwings, post: 14589372, member: 155561"] This ^^ Torque is a derivative of velocity; how fast air both enters and leaves the cylinder. A larger exhaust will cause velocity to slow, which will lower torque, BUT it allows the higher end to flow at a greater velocity (where the smaller pipe was previously a "restriction") which should allow greater top end torque. HP is a derivative of torque, so more torque at a given point = more HP. On paper there is no reason for the car to be losing horse power. Secondly, air coming into the system is still measured at the MAF, and the Catback is far enough downstream of the o2s that nothing there should be effecting them as well. This is the ECU stepping in and doing some funky stuff. [/QUOTE]
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CatBack Systems Losing Power
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