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Chevy 6.6 duramax Can I eliminate all three

Chevy 6.6 duramax Can I eliminate all three mufflers form my exhaust system? One has a bunch of tubes in it.

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  • Master
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You dont really want to eliminate the first can especially.
The tubes going into it are for the regen system..
When the truck goes into "regeneration mode" this can burns all the soot from the exhaust. It gets VERY hot. If you take that out you will have alot of engine fuel problems.

Really I would say dont remove any of it.

Posted on Jun 23, 2009

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  • Chevrolet Master
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The problem with doing this is the sensors. You'll have faults with a check engine light. But, there are ways around it and yes, you could do it.

Posted on Jun 23, 2009

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How much does it cost for the exhaust


Most after-market exhaust companies offer four types of components:
  1. Cat-back exhaust systems - anywhere from $300 to $1200 - The final cost will depend on steel thickness and type, as well as muffler quality.
  2. Axle-back exhaust systems - same as above
  3. High performance mufflers - $75-$300 - The quality of the muffler's materials inside, as well as the type of steel and thickness used, impact the final price.
  4. Exhaust system tips - $25-$150 per tip - Almost all cat-back or axle-back systems include a quality exhaust tip. However, if you're building your own system, you can purchase an exhaust tip to "dress up" your factory pipe.
The schematic below shows where the "cat" (a.k.a. catalytic converter) is in relation to the engine. While many companies sell high-performance catalytic converters, they are fairly expensive and usually don't restrict exhaust flow too much, so we're not going to worry about them here.
alt="Exhaust system schematic with notes">

This is a stylized schematic of an exhaust system.
On some vehicles, the muffler is mounted behind the rear axle. In this case, exhaust manufacturers sell "axle-back" systems. The only difference between a cat-back and an axle-back exhaust is the length of tubing - both include a new muffler. Therefore, there's not a lot of cost difference between the two. Both cat-back and axle-back systems include tubing, a muffler(s), and then all the hardware needed to mount the new system in place of the factory system. Most of the time, these systems use the factory exhaust hangers to make install as easy as possible.
Since a high-performance muffler is a part of a cat-back or axle-back exhaust system, buying a muffler by itself is usually the least expensive option in terms of parts cost. Keep in mind, however, that mufflers have higher labor costs. They're not necessarily less expensive by the time all the labor costs have been accounted for.
Muffler Only vs. Cat-back or Axle-back The biggest advantage in purchasing a full cat-back or axle-back system is that install is really simple. Many of these systems can be installed at home with basic tools. Conversely, installing a muffler at home may not be so simple - cutting and welding may be required. What's more, some after market mufflers require significant re-routing of your stock exhaust tubing...and that can get expensive very quickly.
The other advantage in a full cat-back or axle-back system is that they are often tuned to your specific vehicle and the included muffler(s). All things being equal, a cat-back or axle-back system will perform slightly better than a muffler only.
Stainless Steel vs Aluminized or Galvanized Steel The main difference between a stainless steel exhaust system and an aluminized or galvanized system is durability. Stainless systems will last a lifetime due to their ability to resist corrosion, with 200 300 series stainless systems being more resistant than 300 200 series systems (only the difference is slight). Some manufacturers will try and convince you that one type of stainless system (200, 300, or 400) has better sound quality than another, but there's no evidence we're aware of to support these claims. In fact, stainless steel tends to be slightly thinner than aluminizied steel. If anything, an aluminized system may have better sound quality.
Having said that, the muffler itself is the biggest factor in sound. The steel used in the system isn't as important as some make it out to be (at least in terms of sound quality).
When it comes to choosing between stainless and aluminized systems, it's important to consider your local environment. If you live in an area where corrosion risks are high (such as cold-weather areas that use salt to de-ice roadways), stainless steel may be a reasonable upgrade because it will resist rust. On the other hand, if your local environment is dry and the corrosion risks are low, the only reason to buy a stainless system is for looks.
Exhaust Tips There are probably thousands of different exhaust system tips available. Generally speaking, you get what you pay for. Stainless steel tips are very resistant to corrosion, but they don't shine up as nicely as chrome. Also, stainless steel tips are more likely to "blue", or change color during use. Titanium is also a material used to make exhaust tips - it's incredibly corrosion resistant, but just like stainless it's prone to blue during use. If you like the blue coloring, titanium is probably your best choice. If you want the shiny look, chrome is the way to go. If you want a tip that you can shine up every once in a while - but that's also resistant to the elements - stainless is a smart choice.
Exhaust System Labor Costs If you purchase a cat-back or axle-back exhaust system, labor costs are often very low. These systems bolt-on and use the existing factory hangers. In fact, many performance shops will install a cat-back exhaust system free of charge if you purchase it directly from them.
If you decide you want to purchase a muffler only, you'll want to get an install estimate from your local exhaust shop BEFORE you buy that muffler. Sometimes, installation is very straightforward and the cost is as little as $100. Other times, fabrication is required and the cost can be as high as $300 (or more). If the installation requires a lot of fabrication, you may be better off buying a cat-back or axle-back system instead.

Sep 16, 2015 | Cars & Trucks

1 Answer

1998 Cadillac Deville exaust cross pipe replacement


1) Take it to a muffler shop unless you are a good welder.
2) Procure the new exhaust pipe material.
3) Make the necessary bends in the new pipe to correspond with the layout of the old pipe with a hydraulic tubing bender.
4) Use a band saw to cut the new pipe to lengths using the old pipe as a template.
5) Weld the pieces to form the crossover.
6) Using a cutting torch, cut both exhaust pipes to the length you made the crossover.
7) Weld in the new crossover you just made.
8) If you can't weld with a torch, have no access to a tubing bender and have no way to get the correct exhaust pipe material....take the car to a muffler shop.

Sep 24, 2014 | Cars & Trucks

1 Answer

Why does my 2001 chevy duramax smoke when it idles


This happens when the vacuum in the manifold is at maximum and the air is drawn down past the valve stems into the combustion chamber. IT takes oil with it and so when you increase the RPM's ( moving off at lights)the burnt oil in the exhaust is expelled as a cloud of smoke . The fix here is to replace the valve stem seals that have gone hard/cracked and are no longer sealing on the valve stems

May 11, 2014 | 2001 Chevrolet Silverado 2500

1 Answer

Muffler leaking


Exhaust system has flexibility. When car is in reverse there is an opposite strain form the motor in relation to the exhaust system. A donut or join is opening and causing exhaust to leak out. Your exhaust also has a flex pipe to absorb movement between the engine and exhaust. This may be damaged from being "over flexed"

Sep 21, 2012 | Jeep Grand Cherokee Cars & Trucks

1 Answer

I have a 1997 chev cavalier, and as I was driving I heard a dragging noise, I looked under my car and the tube from the exhaust that connects to the muffler is off, what will i need to fix this, my brother...


Take your car to a muffler shop and ask them if it's possible to reweld the exhaust pipe to the muffler. If the exhaust has rusted too thin, they wont be able to weld it safely, at that point you will have to replace the entire system unfortunately. Exhaust systems comes in sections, so ask them if its possible for them to replace the exhaust from the catalytic converter back only. It should be cheaper if they can do that. Good luck!

May 04, 2011 | 1997 Chevrolet Cavalier

1 Answer

2003 ford focus catalytic converter location


SECTION 309-00: Exhaust System 2003 Focus Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 01/24/2003 Exhaust System adobe.gif Printable View (214 KB) Vehicles with 2.0L Zetec-E enginee0008758.gif
Item Part Number Description 1 - Bracket 2 - Gasket 3 - Catalytic converter 4 - Bracket 5 - Gasket 6 - Front muffler 7 - Rear muffler 8 - Hanger 9 - Flexible pipe

Vehicles with 2.0L SPI enginee0010349.gif
Item Part Number Description 1 - Gasket 2 - Catalytic converter 3 - Bracket 4 - Gasket 5 - Front muffler 6 - Rear muffler 7 - Hanger 8 - Bracket 9 - Flexible pipe

Vehicles with 2.3L PZEV Enginea0072697.gif
Item Part Number Description 1 5G232 Catalytic converter 2 5K222 Mounting bracket 3 5K282 Head shield 4 9451 Gasket 5 5A262 Insulator 6 5E292 Converter and muffler assembly 7 9448 Gasket 8 5G203 Flex Pipe NOTE: The exhaust systems shown in this section are production systems.
The exhaust systems are of a two-piece construction for production and five-piece construction for service.
Catalytic Converter
The catalytic converter fitted to the Focus range resembles a small muffler. Because of the high temperatures at which the catalytic converter operates, the vehicle body areas around the catalytic converter are protected by heat shields. The catalytic converter controls three emissions; Hydro carbons (HC), carbon monoxide (CO) and oxides of nitrogen (NOx).
Catalyst deactivation due to poisoning
Sulphur (S) in the fuel can cause deactivation of the catalyst.
Lead (Pb) in fuel can cause a severe deactivation at levels above 5 mg per liter of fuel. It is therefore essential that vehicles with catalytic converters always operate on unleaded fuel.
Zinc (Zn) and phosphorus (P) present in some oils, can cause deactivation if oil consumption is high.
The effect of sulphur is felt most if it is released from the catalytic converter as hydrogen sulphide (H2S). This has an unpleasant odor similar to rotten eggs. Changing the fuel manufacturer may help in reducing this phenomena.
To minimize H2S emissions, it is essential that the idle CO level is within specification and that the engine emission system is functioning correctly. For additional information, refer to Section 303-08A or Section 303-08B.
ani_caut.gif CAUTION: If temperatures exceeding 900°C are achieved the catalyst substrates will start to deteriorate. It is important that the cause is defined and rectified if subsequent melts are to be prevented.
Catalyst melts are normally accompanied by loss of power due to excessive back pressure. For additional information, refer to Section 303-07A or Section 303-07B.
High substrate temperatures are caused by the ignition or the fuel systems. For additional information, refer to Section 303-07A or Section 303-07B.
Misfires at high engine speed may result in an almost instantaneous melt.

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Mar 07, 2011 | 2003 Ford Focus

1 Answer

I have an exhaust leak in my 98 ford ranger 3.0 auto long bed that I can not seems to solve. I have replaced the exhaust manifold gaskets, egr tube, and the muffler which all were leaking. I have taken...


Have a smoke machine used on the exhaust system

If your not familiar with one,they were designed for finding EVAP Leaks,and can be used for lots of things.

A muffer shop with no smoke. That is Fired Flintstone Repair

Oct 07, 2010 | 2008 Ford Ranger 2WD

1 Answer

What is the wiring order for a chevy 5.0 1985


1 8 4 3 6 5 7 2 . It should also be stampedon the intake.

Sep 03, 2009 | 1985 Chevrolet Chevy

1 Answer

Exhaust on 2008 duramax


the Chevy Silverado and GMC Sierra Accessories and Modifications discussion and ask about custom exhaust tailpipes.

May 14, 2008 | Chevrolet Silverado 3500 Cars & Trucks

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