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SVT Shelby GT500
Guys with longtubes
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<blockquote data-quote="RedVenom48" data-source="post: 15817035" data-attributes="member: 166576"><p>Honestly, buying and installing and aftermarket catted midpipe would be a waste on stock manifolds. Youre still going to have the same restriction with no increase in scavenging efficiency.</p><p></p><p>Headers work so well because each cylinder has its own dedicated exhaust tube down to the collector. The exhaust pulse is much more powerful compared to a log manifold. Once the cylinder exhaust and pulse reach the collector, its passing creates a "vacuum" if you will. That helps "pull" the next cylinder's (same bank) exhaust out of the combustion chamber.</p><p></p><p>Thats why headers can reduce overall boost pressure in our cars, but increase the power potential. Even with a high flow cat placed back in the exhaust stream, the headers make the process efficient enough to see an power boost.</p><p></p><p>Additionally, thats why X pipes make a smidge more power than an H pipe. An X pipe essentially creates another collector by joining bank 1 and 2 together. Each bank helps draw out the others exhaust.</p></blockquote><p></p>
[QUOTE="RedVenom48, post: 15817035, member: 166576"] Honestly, buying and installing and aftermarket catted midpipe would be a waste on stock manifolds. Youre still going to have the same restriction with no increase in scavenging efficiency. Headers work so well because each cylinder has its own dedicated exhaust tube down to the collector. The exhaust pulse is much more powerful compared to a log manifold. Once the cylinder exhaust and pulse reach the collector, its passing creates a "vacuum" if you will. That helps "pull" the next cylinder's (same bank) exhaust out of the combustion chamber. Thats why headers can reduce overall boost pressure in our cars, but increase the power potential. Even with a high flow cat placed back in the exhaust stream, the headers make the process efficient enough to see an power boost. Additionally, thats why X pipes make a smidge more power than an H pipe. An X pipe essentially creates another collector by joining bank 1 and 2 together. Each bank helps draw out the others exhaust. [/QUOTE]
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