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Magnaflow Muffler

TheColter

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TheColter Enthusiast

TheColter

Posted
Posted

I'm thinking about maybe going with a Magnaflow muffler on the stock pipes on my NBS Silverado. I wanted to know if anyone else has done and what they think. I kind of like the single side exit look on these new trucks and why not save some $$$ and just go with a muffler and tip on the factory pipes.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

Isn't there a resonator out by the exit. That will screw up the sound you think your going to get. You would have to cut that out too. No big deal though.

 

But a kit is only 675 from Magnaflow. performance shops should have that for about 550 or less. your lookin at about 200 for the muffler, 50 bucks for pipe to install the muffler to the stock pipe, and resonator removal, another 25 for miscellaneous, 50 bucks for a nice tip, and about 100 bucks for welding, thats about 425 and you get a hacked up 2.75" stock system. For 100 or so more you get a nice mandrel bent system, made to fit, 3" pipe, and a nice polished muffler and Tip.

 

 

Thats just my 0.02.

 

I mean lets be honest....if you really wanted to save money, you wouldn't be changing your exhaust at all, right?

scottmoyer Enthusiast

scottmoyer

Posted
Posted

Not sure about his reasons, but I want to do the same thing and it has nothing to do with the cost. I don't run my truck down the 1/4 mile so adding HP and torque at the expense of mileage isn't my goal. I only care about the sound at this point. I can get a decent Magnaflow muffler for about $90. If it can be connected without any additional tubing or splicing in, then I'm good with the factory pipe size and magnaflow sound.

TheColter Enthusiast

TheColter

Posted
  • Author
Posted

The only costs I would have to worry about are the muffler and a tip. I have access to a full machine shop and have no problem doing the welding. Also, there is no resonator on my factory exhaust. The factory piping is fairly free-flowing as it is already mandrel bent tubing.

 

When you can do things yourself, you can save some serious $$$ that can be put towards other things.

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

I'd say if you can do it cheep, give 'er.

 

At least you will be able to let everyone know what it sounds like and if it was worth doing.

ZZ327 Senior Enthusiast

ZZ327

Posted
Posted

it can be done, Ive got a Dynomax in the stock pipes on my 05. They only changed a little bit of tubing to work.

scottmoyer Enthusiast

scottmoyer

Posted
Posted

What's needed to make it work? The factory tubing is 2.75". Do I need to get a 3" muffler or a 2.5". I don't want to lose power or mileage, but all the exhausts are not the same size as factory. Another way GM makes changing out factory stuff more difficult!

babydeuce Enthusiast

babydeuce

Posted
Posted
What's needed to make it work? The factory tubing is 2.75". Do I need to get a 3" muffler or a 2.5". I don't want to lose power or mileage, but all the exhausts are not the same size as factory. Another way GM makes changing out factory stuff more difficult!

 

I would get the 2.5", an exhaust shop will be able to use the hydraulic expander to open it up to 2.75"

 

Jack

  • 3 weeks later...
ChevyRIDINhigH Enthusiast

ChevyRIDINhigH

Posted
Posted

i just changed the stock muffler for magnaflow and took off the resonator and it sounds GREAT!!!

 

muffler install- $140

 

resonator removal- $40

 

TOTAL- $180

 

END RESULT- GREAT SOUND

 

(i think i got the 9x18 case)

 

(if you want sound samples just pm me and i record it)

diehrd Enthusiast

diehrd

Posted
Posted

I used just the muffler , my system was dual inlet single out let,,I paid 105.00 shipped and 40.00 to install it.

 

 

Why just a muffler ? Few reasons , one is the factory pipes are good for 10 years easily and there diameter is the same as a magnaflow. So why pay hundreds for a kit ? ? I like how it sounds and it fit perfectly no hassle at all even though I have that odd ball dual inlet single out let muffler...

BigJayDogg3 Senior Enthusiast

BigJayDogg3

Posted
Posted

I'm considering going with just a muffler because I need the low end grunt the backpressure provides. When you go to a cat-back, you lose backpressure, and therefore your bottom end.

Lances07Z71 Enthusiast

Lances07Z71

Posted
Posted
I'm considering going with just a muffler because I need the low end grunt the backpressure provides. When you go to a cat-back, you lose backpressure, and therefore your bottom end.

 

No you don't.You gain RWHP and TQ which is bottom end.

overlord1 Enthusiast

overlord1

Posted
Posted

I went with a 20" Hooker Aerochamber muffler and had it welded in place of the stock muffler. Muffler cost like $70 and $50 to have it welded in place. I'm happy for $120 versus $600 plus for the Corsa I really wanted if I had $$$ to spare.

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