I know this is a general question and mostly based on opinions, but I would like to know your opinions on this: What's the best sounding exhaust system?

Truck is a 2009 3500 Diesel Cummins 6.7L. Dually, I believe it is a single exhaust system. I'm looking for either Magna flow or flow master, my budget is around 500-1000$ I want a full exhaust system from turbo all the way to the tip. I can't get a straight pipe, because this is a company vehicule and I believe If I go straight pipe I can possibly void the warranty which I don't need.

Any place where I can test the sounds of these exhaust? So I know exactly what it sounds like before buying one? Oh and BTW the truck is pure stock (engine components wise)

Thanks!

 

This is a tough one due to the year of your truck.

The DPF filter in your exhaust legally must be present at all times and can not be removed without a delete programmer or a fooler box. and those programmers/foolers are getting very hard to come by due to the EPA cracking down on companies that made them...

so if you remove that DPF without a delete programmer, you will have a check engine light on.

I would see if you can find yourself a DPF/EGR delete tuner or fooler, and then pull the entire stock exhaust off and straight pipe it. but save the stock exhaust for doing warranty work or inspections....stock exhaust costs several thousand dollars to replace...

if you didn't have a 6.7L with emissions garbage on it, I would say 4-5" straight pipe sounds great

5" has a deeper tone than 4" and will be slightly quieter.

 

Ya I'm aware of the generation of my truck with all the emission stuff on it. A lot of people told me I should delete the DPF and EGR but I really don't want to **** something up with the engine since that is not my expertise, and I don't want to void my warranty. My warranty covers almost everything and is renewable up till 200k KM on it so I would like not to void it. I called my dealer ship to find out what actually voids the warranty and he told me any piece that I replace will not longer be under the warranty. So for example if I put a custom exhaust and something bad happens to it, then obviously I can't claim that since it is not original. But you know how the dealerships are, if something in the engine breaks down they will probably try to put the blame on the exhaust, just so they can void the warranty lol.

So what that said I can probably put a straight pipe on it, if 5" has a "deeper tone" then I would go with that. Just need to figure out a place around my city that does that kind of work and for how much.

 

As mentioned, in order to straight pipe or really do anything to the exhaust (DPF back exhausts are a joke) you must do a DPF delete. This will void any and all warranty from the engine to the transmission, likely transfer case and axles as well. Any additional power would arguably put more strain on any driveline components; it's their job to prove it caused the failure, and it's yours to prove it didn't. Good luck.

You can delete using sims, you'll still have a CEL and they haven't always been 100%. These don't add power per se, just allow regular pipe to be used in place of the factory exhaust components. Or go code free with a programmer.

Your warranty will be voided if you mess with the emissions, almost guaranteed.

 

Hmm that sounds like a lot of work and trouble lol. What if I buy a regular legal exhaust like a 4 or 5" from magnaflow? I don't have to do any deletes then?

 

what's the point...won't sound any different...still have that big plug in your exhaust...

I will NEVER buy a 6.7L truck...hell with that! lol no need to anyway as my 2nd gen engine will long outlast the truck its in, and I can just swap it to another truck

 

Only legal exhaust is filter back. Complete waste of money as there is no change in sound

 

Ok thanks for your feed back, good to know that a legal exhaust won't sound really different.

My other truck that I still have is a 2003 1500 HEMI 5.7L and it was towing a 7,000 pounds trailer everyday, all summer long, now it needs to rest lol. Now my 2009 3500 is just a pure beast of raw power, I can't even fill the trailer behind me. The engine brake feature on it is just so nice, will definitely use less wear and tear on my brakes.