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Cobra Forums
2015+ Shelby GT350 Mustang
Kooks exhaust and factory resonator system.
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<blockquote data-quote="cmde44" data-source="post: 15728236" data-attributes="member: 187415"><p>I'm still not sold on keeping the factory mufflers. I ordered the Kook's mufflers that go with the exhaust setup. I'll try to get some quality video of the sounds before and after of the exhaust. I'm going to lose my dual tone capability, but it sounds wicked. They also seem to get another 9-10 rwhp with the mufflers.</p><p></p><p>I keep seeing everyone's high dyno results and I feel like something is off with mine. Headers, x-pipe, intake, and tune took me from 446 oem to 477 after. Could ambient temperature and the engine not being warmed up enough account for some discrepancy? It was 103° and I'm not sure how warmed up the car was before the first pull.</p></blockquote><p></p>
[QUOTE="cmde44, post: 15728236, member: 187415"] I'm still not sold on keeping the factory mufflers. I ordered the Kook's mufflers that go with the exhaust setup. I'll try to get some quality video of the sounds before and after of the exhaust. I'm going to lose my dual tone capability, but it sounds wicked. They also seem to get another 9-10 rwhp with the mufflers. I keep seeing everyone's high dyno results and I feel like something is off with mine. Headers, x-pipe, intake, and tune took me from 446 oem to 477 after. Could ambient temperature and the engine not being warmed up enough account for some discrepancy? It was 103° and I'm not sure how warmed up the car was before the first pull. [/QUOTE]
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2015+ Shelby GT350 Mustang
Kooks exhaust and factory resonator system.
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