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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

No cat or No muffler?

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Old Mar 16, 2006 | 06:06 AM
  #1  
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No cat or No muffler?

When you bought an aftermarket exhaust which did you do?

What do yo think sounds better?

Going for extra power with a powerful sound.
 
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Old Mar 16, 2006 | 06:55 AM
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On muffler would be better. Besides, no cat is illegal.
 
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Old Mar 16, 2006 | 07:40 AM
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Thanks, that is what I thought. How do you like those 4.10s. I was considering starting off with them sense I plan to run a 36'' tire soon.
 
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Old Mar 16, 2006 | 12:14 PM
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I have an MBRP turbo back kit. I used kit #S6212409 with a muffler delete pipe. I love the sound and the truck runs great. The whistle isn't like the '03s but it's loud enought to hear at a distance.

Remember you need to do mods, you need to think in terms of working them together not just one piece making all the power.
 
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Old Mar 16, 2006 | 01:15 PM
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Originally Posted by HeavyAssault
I have an MBRP turbo back kit. I used kit #S6212409 with a muffler delete pipe. I love the sound and the truck runs great. The whistle isn't like the '03s but it's loud enought to hear at a distance.

Remember you need to do mods, you need to think in terms of working them together not just one piece making all the power.
Oh yeah, I have a plan in my head that should allow for reliable power.
TS 5x w/module
MBRP exhaust
AFE intake
Maybe a FASS fuel system
and of course gauges
 
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Old Mar 26, 2006 | 01:47 PM
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I just put a custom exhaust system on my truck. I have no cat or muffler on it. I had a straight pipe ran from the down pipe straight back then had a t installed then two straight pipes right out of the back.
 
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Old Mar 26, 2006 | 02:32 PM
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The straight pipe sounds the best until you are running to much power from a chip then it starts to crackle and snap like a straight pipe gas engine.
 
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Old Mar 27, 2006 | 07:23 AM
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Originally Posted by Dsl_Burner
The straight pipe sounds the best until you are running to much power from a chip then it starts to crackle and snap like a straight pipe gas engine.
Interesting, you get the crackle sound with a 3.5"(or larger) pipe, and through the turbo? I did not expect this, good to know. thanks
 
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Old Mar 27, 2006 | 09:17 AM
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I have 4" straightpipe on my '03 rig with a Hypertech Hyperpac on Stage 3. I don't get that crackling you're talking about. ?? All you hear is turbo whistle till about 2k rpm, then after that, it sounds like a Big Block Ford!! The way, something with an engine that big, should sound!!! Nothing like it!!!!
 
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Old Mar 27, 2006 | 09:27 AM
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resqdawg3;
That is what I expected. I am straight piped(OEM Exhaust) just stock aside from that and I am no where near a crackle. Like to refer to the Flowmaster 40 series(on a V-8 of course) about the best I can describe it.
 
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Old Mar 27, 2006 | 09:45 AM
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I simply did a muffler delete and all stock. Left cat in place and I think it sounds great. Almost stock until about 2500 Revs, then you know you've got a big block V8. Running next to a Jersey baricade lets you really hear it! I just don't need any more power than what it already has stock, so I don't get myself in trouble with Ford either.
 
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Old Mar 27, 2006 | 12:32 PM
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i was told that if you delete the muffler you wont be able to pass inspection. Because i went to a muffler shop and they said they couldnt do it bc of that reason.
 
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Old Mar 27, 2006 | 12:45 PM
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In my area because of it being diesel we don't hve emission testing so I will be alright with inspection I had already checked on that before I had the cat and muffler removed.
 
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Old Mar 27, 2006 | 05:08 PM
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Originally Posted by WWBeast
i was told that if you delete the muffler you wont be able to pass inspection. Because i went to a muffler shop and they said they couldnt do it bc of that reason.
Where do you live that they emmission test a HD Diesel? I am in the Atlanta area and they SMOG test everything but Diesels. So yep, let them both "fall off" . But I have heard that some people have posted the same numbers with and W/O the muffler. The muffler has no emissions purpose whatsoever...That I know of.
 
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