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SVT Shelby GT500
Boss 302 Quad Pipes on a GT500
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<blockquote data-quote="tasdevl" data-source="post: 12391299" data-attributes="member: 141001"><p>The Boss H-pipe sends exhaust output to the rear and the sides all the time, it's like an H shape with an extra pipe out each side. The optional part is what you put between the sides of the H-pipe and each side pipe. The normal Boss setup has a flat metal plate between the H-pipe and the side pipe with a little teeny hole in it, allowing only a small amount of exhaust gas out the sides. </p><p></p><p><img src="http://mustangsdaily.com/blog/wp-content/uploads/2011/09/04-boss-302-exhaust-restrictor-585x388.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Some folks keep it stock, some remove the plate and run it open (Tob), some (me) make the hole larger (it's now a 7/8" sized hole instead of 5/16"), and some replace the plate with electric butterfly valves from QTP as Tob said, so they can open them up or close them off from the cabin with a switch. There's nothing that changes with RPMs, although theoretically that would be a cool idea to automatically open a butterfly valve fully at WOT.</p></blockquote><p></p>
[QUOTE="tasdevl, post: 12391299, member: 141001"] The Boss H-pipe sends exhaust output to the rear and the sides all the time, it's like an H shape with an extra pipe out each side. The optional part is what you put between the sides of the H-pipe and each side pipe. The normal Boss setup has a flat metal plate between the H-pipe and the side pipe with a little teeny hole in it, allowing only a small amount of exhaust gas out the sides. [IMG]http://mustangsdaily.com/blog/wp-content/uploads/2011/09/04-boss-302-exhaust-restrictor-585x388.jpg[/IMG] Some folks keep it stock, some remove the plate and run it open (Tob), some (me) make the hole larger (it's now a 7/8" sized hole instead of 5/16"), and some replace the plate with electric butterfly valves from QTP as Tob said, so they can open them up or close them off from the cabin with a switch. There's nothing that changes with RPMs, although theoretically that would be a cool idea to automatically open a butterfly valve fully at WOT. [/QUOTE]
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