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SVT Shelby GT500
Stock mufflers...power...
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<blockquote data-quote="nrmustang" data-source="post: 15007508" data-attributes="member: 34986"><p>Long story short, I pulled off my Flowmaster Force II axle backs and stock cat-pipe, and installed a Lethal o/r H with stock mufflers.</p><p></p><p>It threw a check engine light (I knew it would), and decided to throw the stock cat-pipe on with the stock axle backs for now.</p><p></p><p>Here's my question: Everyone swears the stock mufflers flow great, and there's no power advantage to any aftermarket axle back. However, I can tell a difference going from the Flow's to the stock mufflers. Does anyone have any hard evidence (ie; dyno sheet) proving their theory either that axle backs do/don't flow better?</p><p></p><p>I searched, but again, all theories or marketing, and little evidence. Thanks</p></blockquote><p></p>
[QUOTE="nrmustang, post: 15007508, member: 34986"] Long story short, I pulled off my Flowmaster Force II axle backs and stock cat-pipe, and installed a Lethal o/r H with stock mufflers. It threw a check engine light (I knew it would), and decided to throw the stock cat-pipe on with the stock axle backs for now. Here's my question: Everyone swears the stock mufflers flow great, and there's no power advantage to any aftermarket axle back. However, I can tell a difference going from the Flow's to the stock mufflers. Does anyone have any hard evidence (ie; dyno sheet) proving their theory either that axle backs do/don't flow better? I searched, but again, all theories or marketing, and little evidence. Thanks [/QUOTE]
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Stock mufflers...power...
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