no muffler = ?
Elder User
Joined: Jul 2005
Posts: 533
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From: NorCal
Diesel or gasser? Removing the muffler on a diesel is a common practice. With the windows up, you probably won't notice any difference at all. With the windows down, the turbo whistle and powerstroke growl is pleasing to the ears 
You will gain turbo noise and lose EGT, win win situation!
If it's a gasser, keep the muffler on there
You will gain turbo noise and lose EGT, win win situation!If it's a gasser, keep the muffler on there
Elder User
Joined: Jul 2005
Posts: 533
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From: NorCal
Just looked at your gallery, says you got a 5.4. Wow, w/o a muffler it must be REALLY f'n loud lol. I would keep the muffler on, if anything I'd get a 40-series Flowmaster on there; plenty of V8 sound there.
I can't imagine the noise level trying to merge a freeway with a 5.4 w/o a muffler, or pull a load up a hill...forget it, too loud for me.
Damn I sound old saying that.
I can't imagine the noise level trying to merge a freeway with a 5.4 w/o a muffler, or pull a load up a hill...forget it, too loud for me.
Damn I sound old saying that.
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Senior User
Joined: Jan 2003
Posts: 114
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From: Antioch
so what happens if i take the muff off? lower milage? and its only real loud on idle on low rpm, when you get going 35+ mph it sounds fine, NICE!!!
Last edited by cockeyed00; Aug 3, 2006 at 08:02 PM.
Senior User
Joined: Jan 2003
Posts: 187
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From: North Alabama
Will removing the muffler on a PSD (6.0) constitute tampering with the exhaust system and void my extended warranty? Been thinking about doing this but don't want to lose 3 years/35,000 that are left on the warranty.
Just curious....thanks in advance!
Just curious....thanks in advance!
Posting Guru
Joined: Jun 2006
Posts: 1,028
Likes: 6
From: West Hills, Ca.
The muffler had already been removed when I bought my 01. If I stay under 2000 rpm, it is quieter than a Burb I had with an Aero-Turbine(very cool sound). When I stomp on it, it growls REALLY nice! Stomp on it too much and you get a real Nasty(in a bad way) high pitched, almost 4 cylinder screech! It's hard to explain, but once you hear it, you don't want to hear it again!
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Senior User
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From: Antioch
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