IS F (2008-2014) Discussion topics related to the IS F model

Single vs Dual Exhaust

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Old 05-10-17, 02:43 PM
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Fredd001
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Default Single vs Dual Exhaust

Hey guys this may be an easy question for you but I have yet to find the answer.
When I bought my 09 ISF it had a single exhaust and it sounds Amazing I get complements anywhere I go. But my question is, performance wise, am I loosing horsepower because of the single exhaust or is it fine?
Thanks for helping 💪
Old 05-10-17, 02:47 PM
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liquidtek
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Only person I know who runs a single exit is figs but he's running EL headers and custom built exhaust. Not sure how stock headers might impact a single exit vs dual so maybe someone else smarter than me can enlighten us.
Old 05-10-17, 03:22 PM
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Talbert92
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based on my past experiences it really depends on the persons preference and if you're straight piped. I'm on a H pipe on my LS400 with all the Cali smog certified cats, no rez or mufflers though. only thing id have to say is the back pressure is lost slightly when going dule over single
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