Whats everybody got?
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Joined: Jan 2005
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Whats everybody got?
I want to do away with the stock exhaust on my 01 f-150 5.4L. I dont know the sound difference between the two. Who has straight pipes and who has a flowmasters,etc... The guy at the muffler shop says that year f150 has 4 cats and straights sound the best but i dont know.
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Joined: Dec 2003
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From: Arlington, Texas
I've just got a single in/dual out flowmaster 40. It sounds pretty good. Has a nice deep rumble, but it isn't really all that loud. I eventually want to do a complete header back dual exhaust install, but I just have to find the time. Straights are a lot louder than a muffled exhaust system. Yes, they do have 4 cats. Straight pipes are also illegal in most counties that have emissions testing, so watch out for that too.
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Joined: Sep 2004
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From: Missouri
I've actually had both on my '01 5.4. I cut away the muffler one night on a whim, slightly under the influence, and ended up loving it. Even though the pipe dumped almost right under the cab causing all kinds of interior resonance, I loved it. I love the sound of these mod motors up top. Down low it's real deep, noticeable definitely at idle, and up top it screams. You'll have to hear one for yourself under full throtte above 4k, I didn't know a truck motor could sound like something out of IHRA 
With straight pipes, the sound inside won't be as bad, and will definitely sound pretty hardcore. I currently have a Flowmaster 50 series muffler single in dual out Y pipe configuration, split rear exit. Not nearly as clean, not very loud, but looks alot better than just cutting away the muffler. People would look at my truck several times to figure out where that roar was coming from when I just had the muffler cut away
With straight pipes, the sound inside won't be as bad, and will definitely sound pretty hardcore. I currently have a Flowmaster 50 series muffler single in dual out Y pipe configuration, split rear exit. Not nearly as clean, not very loud, but looks alot better than just cutting away the muffler. People would look at my truck several times to figure out where that roar was coming from when I just had the muffler cut away
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From: Rio Rancho USA
Originally Posted by xallxforxchristx
Straight pipes are also illegal in most counties that have emissions testing, so watch out for that too.
As for me- 2.25" duals to dual Magnaflows. 3" duals after the mufflers.
Very deep and mellow.
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Senior User
Joined: Dec 2003
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From: Arlington, Texas
[QUOTE=kens64]Mabye for noise, but not emissions. As long as the cats are working properly, you can do anything you want to the pipe after them.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
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Joined: Sep 2004
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From: Missouri
[QUOTE=xallxforxchristx]
As long as you have cats, you'll pass emissions, but MAYBE not inspection. In some counties in some states mufflers are required.
Originally Posted by kens64
Mabye for noise, but not emissions. As long as the cats are working properly, you can do anything you want to the pipe after them.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
Posting Guru
Joined: Jun 2002
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From: Rio Rancho USA
[QUOTE=xallxforxchristx]
Understood.
Originally Posted by kens64
Mabye for noise, but not emissions. As long as the cats are working properly, you can do anything you want to the pipe after them.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
To me though straight pipes mean that you don't have any restrictions. My idea of them use just exhaust piping from the headers back. No cats to interfere with the flow. That's just my opinion though.
Senior User
Joined: Dec 2003
Posts: 205
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From: Arlington, Texas
This is a little off subject, but how do you guys get the quote boxes to come up? I tried to do that when I was explaining my understanding of staight pipes but it just said quote and no box came up. I know this has nothing to do with exhaust, but could someone tell me how so I'll know for next time. Thanks.
Senior User
Joined: Dec 2003
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From: Arlington, Texas
yeah, mufflers and cats are required here in Texas to pass visual inspection. At least in the places where smog is worse. In emmissions exempt counties, I think all they require is a muffler to pass visual. That's what I've been told anyways.
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From: Quispamsis, N.B, Canada
Originally Posted by 90F1505.0L
I'm running single 3" with A Catco High Flow Cat and a Z-33 Ravin. Sounds nice and loud and yes people hear me coming from a long ways......