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Cutting Stock Muffler


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#1 Justin Lane

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Posted 06 May 2011 - 03:54 PM

I am not a fan of the pipe sticking out the back of my truck. Yes I know it's a picky thing, but I just don't like it. I though about just cutting some of the pipe to make it almost like a turn down. I figured it wouldn't affect the sound any. But I am thinking about just cutting the whole stock muffler off and run it like that. Will that cause a check engine light, or any problem if I did that? I just don't want it to sound like shit.

I have 2009 Sierra 5.3l
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#2 GrapeSoda

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Posted 06 May 2011 - 04:37 PM

Cutting the stock muffler off should not trigger any codes from what i understand, but im not to sure on those new trucks. Post up a vid when/if you do it!
0110011117-1.jpg
2001 Silverado Z71-->5.3-->G80-->230,000 miles, Warn 8000 pound winch with a Warn Trans4mer, True duals no muffler w cats on it sounds amazing, MasterCraft Courser M/T's(285/75/16), Two 12 inch subs, Ready Lift Leveling Kit 1978 GMC Jimmy--> In the process of getting her road worthy...Then a 6 inch lift an 37s will come

#3 iminaquagmire

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Posted 06 May 2011 - 04:44 PM

Don't lop off the whole muffler. These trucks need the backpressure. Cut the end of the pipe off and put a new muffler in the stock one's place if you want a change but want it cheap. Unbolt the stock setup and you'll see why cutting the muffler out isn't a good idea.
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#4 Vans

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Posted 06 May 2011 - 04:46 PM

Does just cutting the pipe so it is a down turn affect the sound at all. I have heard it does and heard it does not.

#5 GMstrong

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Posted 06 May 2011 - 05:23 PM

Cut that restrictive box off,Its a truck you need it loud.I dont know about these new trucks but my 99 sierra has 4 cats and thats enough back pressure.Remember "Loud pipes save lives"!except if its a real old person then it might be a little different.
1995 Chevy Caprice 9C1 5.7L,4L60E,3:08's 134,000(Sold)
1990 GMC Sierra SLE C1500 5.7L/700R4,3:42's 300,000(Sold)
1999 GMC Sierra SLE K1500 5.3L/4L60E,3:73's 157,800
2000 GMC Sierra SL C2500 5.7L/4L80E,3:73's 188,600 check out youtube.com/youngerprice for exhaust vids!
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#6 cparks555

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Posted 06 May 2011 - 05:31 PM

I've been thinking about doing the same, just can't make up my mind. I would only cut it off at the hanger right in front of the rear wheel. Would really like to see some pics if you decide to do it!

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#7 MikeNH

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Posted 06 May 2011 - 06:40 PM

No muffler will sound awful with no tailpipe, it will make long drives suck and the resonance will suck. Don't do it.

#8 GrapeSoda

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Posted 06 May 2011 - 07:40 PM

http://www.youtube.c...feature=related



http://www.youtube.c...feature=related

They all sound good to me. I say go for it and if you dont like then just have your stock muffler welded back on!
0110011117-1.jpg
2001 Silverado Z71-->5.3-->G80-->230,000 miles, Warn 8000 pound winch with a Warn Trans4mer, True duals no muffler w cats on it sounds amazing, MasterCraft Courser M/T's(285/75/16), Two 12 inch subs, Ready Lift Leveling Kit 1978 GMC Jimmy--> In the process of getting her road worthy...Then a 6 inch lift an 37s will come

#9 MikeNH

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Posted 06 May 2011 - 07:45 PM

They do sound good outside. I'm talking about how it will be inside the cab. It will be a miserable place to spend time.

#10 Justin Lane

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Posted 06 May 2011 - 10:45 PM

I cut the tail pipe alittle past the first bend. Which is also a little before that first hanger mount. Then I just cleaned up the edges with an angle grinder. Not much of a sound difference at all. Maybe I slight increase in drone I dont know but I don't think removing that little bit of pipe did much of anything except make the truck look a little better...
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#11 MikeNH

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Posted 06 May 2011 - 11:02 PM

Ditching the tailpipe won't do too much but cutting off the muffler is what I was saying you should pass on.

#12 Justin Lane

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Posted 06 May 2011 - 11:04 PM

yeah well I thought about cutting the muffler but just didn't want to mess something up i'd have to the fix
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#13 BigBlueLB756

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Posted 07 May 2011 - 05:28 AM

A little late to the party, but I cut my tailpipe back 31" and put on a tip (2.75" inlet from Summit) and was happy with the results.

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#14 spankrz

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Posted 07 May 2011 - 12:48 PM

that should get the exhaust out behind you good enough. ive never been a fan of dumping at the axel, but different strokes for different folks right
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#15 Justin Lane

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Posted 07 May 2011 - 07:59 PM

this is where i cut mine at approximately
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