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2009 F150 Factory Muffler Flow Question

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Old Dec 2, 2008 | 09:00 AM
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2009 F150 Factory Muffler Flow Question

2009 Exhaust (Factory or Aftermarket)<!-- google_ad_section_end -->

<HR style="COLOR: #ffffff; BACKGROUND-COLOR: #ffffff" SIZE=1><!-- / icon and title --><!-- message --><!-- google_ad_section_start -->Looking at the factory muffler display, it appears as if the 2009 F150 muffler is free flowing. AFE says their 2009 F150 exhaust flows 55% better. Can this be possible or is it just marketing hype? The factory muffler sounds good when you get on it. Just wondering if I would gain any performance with a Magnaflow.<!-- google_ad_section_end -->
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Old Dec 2, 2008 | 11:47 AM
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It depends, is the factory muffler a flow through design as well? I have seen the inside of a Tundra muffler and they still have some baffles to cancel out sound.

If you're buying a Magnaflow muffler, you're honestly not going to see a big "gain" in performance that you'll write home about.

Sorry, mufflers just don't have the kick in the seat of the pants feel that people expect 'em too (myself included).



-rockstate
 
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Old Dec 2, 2008 | 11:59 AM
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Originally Posted by rockstate45
It depends, is the factory muffler a flow through design as well? I have seen the inside of a Tundra muffler and they still have some baffles to cancel out sound.

If you're buying a Magnaflow muffler, you're honestly not going to see a big "gain" in performance that you'll write home about.

Sorry, mufflers just don't have the kick in the seat of the pants feel that people expect 'em too (myself included).



-rockstate
Your right about the gains. I have seen some gains of 10-15hp on highly modded Turbo engines but NA engines i have yet to see gains of any kind. Now the sound is another matter.
 
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Old Dec 2, 2008 | 12:02 PM
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Yeah, I absolutely LOVE the sound of the Borla that's on my truck Wish it were a tad louder these days, but driving 900 mile clips every once and a while really makes me glad that I have the system I have.

-rockstate
 
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Old Dec 2, 2008 | 12:08 PM
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Originally Posted by rockstate45
Yeah, I absolutely LOVE the sound of the Borla that's on my truck Wish it were a tad louder these days, but driving 900 mile clips every once and a while really makes me glad that I have the system I have.

-rockstate
Yeah the noise can get a little much. I dont know what was done to the chevy avalanche we have at the house but to be honest i cant travel in it. The noise it makes is such a low rumble that it makes your head hurt when your in it for even 5 mins. You dont even wanna know what it's like in the back as a passenger. It's even worse. From outside it makes a lovely deep rumble but there's no way on earth i could live with that everyday. i have to have a happy medium.
 
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Old Dec 2, 2008 | 12:19 PM
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Yeah exhaust can be a great thing but there are so many ways to go wrong IMO. I hate the really really loud exhausts.

The Borla has a beautiful rumble at idle when both the engine and outside temp are cold. When it's warm outside, it doesn't idle so high and it's not so loud.

Hell, I'll take a video of it when I go to golf class and post it up around 2-2:30

-rockstate
 
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Old Dec 2, 2008 | 05:43 PM
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Borla has the new '09 system designed and is available. The part number is 140291 and it will cost $889.99.
 
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