I have decided after reading numerous forums that I am changing my stock muffler to a magnaflow muffler. I can't decide on the size. I want it to rumble when ...

Success · by **Success** [OP] » May 09 2011, 8:29pm

I have decided after reading numerous forums that I am changing my stock muffler to a magnaflow muffler. I can't decide on the size. I want it to rumble when I get on it but not too bad in the cab when cruising. Does anyone have experience with this setup in a nnbs chevy? Specifically a '10 silverado 5.3 tuned by Black Bear.
Thanks
James

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Kyle · by **Kyle** » May 09 2011, 9:06pm

Magna and Glasspacks are pretty similar. I ran 18" glasspacks on my 2011 5.3 and it's perfect. Nice sound, low cab noise, and she can bark if I want it to, or keep quiet if I want as well. The shorter you get, the louder she'll be and harder to keep quiet. Kinda the opposite we were taught growing up

Caldwell · by **Caldwell** » May 09 2011, 10:41pm

go for the 14'' muffler...

rdss · by **rdss** » May 10 2011, 12:18am

I should have a 4x9x18" Magnaflow in the truck by Friday and I will let you know what I think, my next step if it isn't 3 year old boy compliant is to go to the 5x11x22".

Success · by **Success** [OP] » May 10 2011, 12:47am

Rdss
Let me know how it goes. Is $150 a reasonable price installed?

rdss · by **rdss** » May 10 2011, 12:56am

I got mine for 72 bucks online and think you could get it welded in for 20-40 bucks. And I will let you know what I think about it and get video if I can figure out how to post it!lol

Success · by **Success** [OP] » May 14 2011, 7:52pm

Ended up getting a 22" magnaflow. It's exactly how I wanted it to sound. I don't think I would gave liked a smaller one.

What size exhaust tip does anyone recommend? I'm looking at some powdercoated ones.

rdss · by **rdss** » May 14 2011, 8:19pm

Glad your happy with the 22"! I love my 4x9x18" and think house is probably just a little bit quoted than mine, just got it installed thursday. I get a small amount of resonance from 1200-1700 rpm while excelerating but have nothing while maintaining a speed. How about you? I think a dual walled 4" tip always looks nice.

Success · by **Success** [OP] » May 15 2011, 1:10am

I feel like the drone is there when accelerating and the transmission is shifting from 2nd to 3rd. No drone in 4 cylinder. I think an 18" would have been fine now but im glad I played it safe. I didn't want to rattle windows or wake up my neighbors. I just wanted less restriction.
How long on the exhaust tip: 18"?

rdss · by **rdss** » May 15 2011, 2:45am

I think I would have been fine with the 22" as well but more than happy with the 18". The 18" tip is probably long enough. If you're running the stock pipe I would measure from where you want the pipe to stop from where you want it to start and the shoo from there.

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I have decided after reading numerous forums that I am changing my stock muffler to a magnaflow muffler. I can't decide on the size. I want it to rumble when ...

14" vs 18" Magnaflow Muffler?

14" vs 18" Magnaflow Muffler?

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14" vs 18" magnaflow muffler?????

Re: 14

14" vs 18" magnaflow muffler?????

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14" vs 18" magnaflow muffler?????

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