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SVT Shelby GT500
Long tubes vs. O/R pipe
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<blockquote data-quote="Jam421" data-source="post: 16377012" data-attributes="member: 110985"><p>My '13 made 24rwhp with AMR H-Pipe headers, Hi-Flo Cats + tune. Already had 2.4 upper & VMP 67. Headers were louder + way deeper and did drop 1psi boost to 16.5. Guys here will tell us anything on the exhaust side that lowers back pressure helps reduce boost. Remarkably, when I added a larger CAI + KB Mono Blade my boost was not effected. I'd only guess with stock exhaust we might have seen slight boost increase with the intake mods? </p><p>Regarding OR pipe? My buddy had FBO's on his '08. During a Trinity swap (stock 2.67upper + 10% lower) boost seemed very high. ..18-18.5.psi. Turns out his cats were breaking and began to clog. Cats were hogged out on a bench. We expected tune revision but not required. Boost did drop to safer 17psi. Sound was deeper & louder but surprisingly no HP gain on the dyno.</p></blockquote><p></p>
[QUOTE="Jam421, post: 16377012, member: 110985"] My '13 made 24rwhp with AMR H-Pipe headers, Hi-Flo Cats + tune. Already had 2.4 upper & VMP 67. Headers were louder + way deeper and did drop 1psi boost to 16.5. Guys here will tell us anything on the exhaust side that lowers back pressure helps reduce boost. Remarkably, when I added a larger CAI + KB Mono Blade my boost was not effected. I'd only guess with stock exhaust we might have seen slight boost increase with the intake mods? Regarding OR pipe? My buddy had FBO's on his '08. During a Trinity swap (stock 2.67upper + 10% lower) boost seemed very high. ..18-18.5.psi. Turns out his cats were breaking and began to clog. Cats were hogged out on a bench. We expected tune revision but not required. Boost did drop to safer 17psi. Sound was deeper & louder but surprisingly no HP gain on the dyno. [/QUOTE]
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Long tubes vs. O/R pipe
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