Stock exhaust / muffler delete benefits? - Diesel Forum - TheDieselStop.com
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Upgrades and Aftermarket - 6.0L Engine Upgrading or adding OEM or aftermarket equipment to your 2003-Up Super Duty or Excursion with 6.0L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 04-11-2006, 10:36 AM   #1 (permalink)
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Stock exhaust / muffler delete benefits?

I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave
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Old 04-11-2006, 04:03 PM   #2 (permalink)
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Re: Stock exhaust / muffler delete benefits?

If I were to do it all again, I would DEFINATELY try it with just deleting the muffler. Should only cost you $20.00 to cut that sucker off (nothing if you have a sawz all) First mod you should do IMHO.
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Old 04-11-2006, 10:53 PM   #3 (permalink)
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Re: Stock exhaust / muffler delete benefits?

I doubt if you will feel any difference but it should breathe a little better and be about 50 lbs lighter. I think it sounds good especially when towing my TT up the pass and going through a tunnel @3000 rpm's with the RR window down.
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Old 04-11-2006, 11:47 PM   #4 (permalink)
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Re: Stock exhaust / muffler delete benefits?

There isn't much to be "felt" in a turbo back exhaust except in the eardrums. The 03 DP is a POS but is not that bad, assuming stock to mild power increases. IMO, and if I were to do it again, I would forgo the complete exhaust and kill the muffler. The OE muffler has got to be the most restrictive part of the exhaust so eliminating it would be your cheapest flow to $buck$ bang.
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Old 04-12-2006, 02:32 AM   #5 (permalink)
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Re: Stock exhaust / muffler delete benefits?

So the jump from 3 1/2" to 4" is not worth the effort? I got 50Hp and 100 ft lbs by doing the front and rear end opening..Beats the heck out of a chip.
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Old 04-12-2006, 04:45 AM   #6 (permalink)
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Re: Stock exhaust / muffler delete benefits?

Depends on what your end goal (mods) is and what turbo you have. Many factors giving many different results. I would not go with a 4" DP on a 03 turbo unless I was adding larger injectors, etc. 3 1/2" is good for stock to mild.

Most exhaust manufactures advertise way less than 50HP. Generally 5-10% increase over stock. After some power mods such as intake, chip, fuel, etc. you could easily get 50+ but not with just exhasut.
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Old 04-12-2006, 09:28 AM   #7 (permalink)
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Re: Stock exhaust / muffler delete benefits?

Deleted muffler on my 02, it does not have a cat from the factory. Sounds great, no change in seat-of-pants feel. Sprung for the whole exhaust on my 04, to me the straight piped 02 sounds better. Anything you do is better than that 55 gallon drum factory muffler!
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Old 04-12-2006, 10:38 AM   #8 (permalink)
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Re: Stock exhaust / muffler delete benefits?

[ QUOTE ]
I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave

[/ QUOTE ]

If you have had or are planning on having the 06E03 recal done on your 03 truck, you may have problems with the aftermarket exhaust, and if you decide to put a AM intake on it, that may cause you problems as well.
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Old 04-12-2006, 10:55 AM   #9 (permalink)
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Re: Stock exhaust / muffler delete benefits?

[ QUOTE ]
I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave

[/ QUOTE ]

Dave
If I was to do it again, I would get a 3.5 inch down pipe ($160) and a muffler delete pipe (under $50). Just those two would give a decent increase in HP and MPG [img]/ubbthreads/images/graemlins/smokin.gif[/img].

TasMan
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Old 04-12-2006, 12:14 PM   #10 (permalink)
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Re: Stock exhaust / muffler delete benefits?

[ QUOTE ]
[ QUOTE ]
I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave

[/ QUOTE ]

If you have had or are planning on having the 06E03 recal done on your 03 truck, you may have problems with the aftermarket exhaust, and if you decide to put a AM intake on it, that may cause you problems as well.

[/ QUOTE ]

Thanks! What is the 06E03? It had a different turbo installed on a TSB. It also is on it's second tranny. I bought it used and it seemed to have more power before I took it in for the transmission. I'm wondering if it had previously been programmed and they returned it to the stock program. I like the donaldson intake filter so I probably won't change that. Thanks again, Dave
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Old 04-12-2006, 12:15 PM   #11 (permalink)
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Re: Stock exhaust / muffler delete benefits?

[ QUOTE ]
[ QUOTE ]
I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave

[/ QUOTE ]

Dave
If I was to do it again, I would get a 3.5 inch down pipe ($160) and a muffler delete pipe (under $50). Just those two would give a decent increase in HP and MPG [img]/ubbthreads/images/graemlins/smokin.gif[/img].

TasMan

[/ QUOTE ]

Thanks! Where did you buy those parts at? Dave
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Old 04-12-2006, 01:52 PM   #12 (permalink)
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Diesel Performance Parts

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
I am installing the Hypertech III on my 2003 F350 6.0 dually crew w/auto tranny and 4X4. Not looking for HUGE power, just a little boost and a little better tranny shifting. Does removing the muffler help much or is it just the sound that changes? I noticed that there is a pretty good crimp in the exhaust just below the turbo. It seems like that would cause a pretty good restriction. Would the muffler removal be a waste as far as flow is concerned? Should I just look for a 4" turbo back system (with a cat of course)? Thanks! Dave

[/ QUOTE ]

Dave
If I was to do it again, I would get a 3.5 inch down pipe ($160) and a muffler delete pipe (under $50). Just those two would give a decent increase in HP and MPG [img]/ubbthreads/images/graemlins/smokin.gif[/img].

TasMan

[/ QUOTE ]

Thanks! Where did you buy those parts at? Dave

[/ QUOTE ]

Diesel Performance Parts Mark is a great guy and he will do you right. Tell him TasMan sent Ya [img]/ubbthreads/images/graemlins/grin.gif[/img].

TasMan
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