Just ordered the Flowmaster 50 series for the 4.7 - Jeep Commander Forums: Jeep Commander Forum
Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 52 (permalink) Old 07-30-2009, 02:10 PM Thread Starter
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Just ordered the Flowmaster 50 series for the 4.7

Part number 52556 and the installation should be in a couple of days. I am going to have the resonator removed also. I will post up a video when completed. Hopefully the exhaust will have a decent sound after the install.

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post #2 of 52 (permalink) Old 07-30-2009, 03:42 PM
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The 50 sounds great especially when you really hit the gas. 07JeepXK has the 50 SUV and it sounds good especially compared to stock. Not sure how it sounds inside the truck but you will find out.

Bright Silver 4.7L 2.25 RR/OME lift, Kumho KL71 265/70/17, Flashpaq, Lights, rack, intake, Super44, mopar skids, 4x belly guard, rear fog lights, MM9500 winch, GetLost4x4 winch mount

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post #3 of 52 (permalink) Old 07-30-2009, 09:43 PM Thread Starter
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Quote:
Originally Posted by adamag25 View Post
The 50 sounds great especially when you really hit the gas. 07JeepXK has the 50 SUV and it sounds good especially compared to stock. Not sure how it sounds inside the truck but you will find out.
That is good to know that the exhaust sound will improve. I am looking for a deeper/louder exhaust note.

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post #4 of 52 (permalink) Old 07-30-2009, 10:18 PM
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Keep us posted, I'm especially interested in the "in cabin" sound. I want to upgrade the exhaust but don't want to have any resonating issues. My Magnaflow kit on my 06 Sierra resonated like crazy, especially when pulling my motorcycle trailer.

OT- got any pictures of your 04 Goat?

Here's mine...


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post #5 of 52 (permalink) Old 07-31-2009, 06:08 AM
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I've got a dynomax muffler and dual out pipes with very little resonating in the cabin. I'll look for the PN.

edit: Specs for the muffler are:
Part #17263
6" Round
Overall length 20"
Shell length 16"
Inlet 2⁄₂"
Outlet 2⁄₂"
Sound rating: Sport
Flow in SCFM: 1000

Start with post #35

06 Sport-4.7L with QT2

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Last edited by jcoulter; 07-31-2009 at 06:10 AM.
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post #6 of 52 (permalink) Old 07-31-2009, 06:52 AM
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I had a dynomax glass pack on before the flowmaster. They were about the same in volume both inside and out but the tone of the flowmaster is much better than my dynomax was.

Bright Silver 4.7L 2.25 RR/OME lift, Kumho KL71 265/70/17, Flashpaq, Lights, rack, intake, Super44, mopar skids, 4x belly guard, rear fog lights, MM9500 winch, GetLost4x4 winch mount

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post #7 of 52 (permalink) Old 07-31-2009, 07:05 AM Thread Starter
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Quote:
Originally Posted by Westy View Post
Keep us posted, I'm especially interested in the "in cabin" sound. I want to upgrade the exhaust but don't want to have any resonating issues. My Magnaflow kit on my 06 Sierra resonated like crazy, especially when pulling my motorcycle trailer.

OT- got any pictures of your 04 Goat?

Here's mine...

Looks good.


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post #8 of 52 (permalink) Old 07-31-2009, 08:42 AM
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Just personally I've never liked a noisy exhaust ... FlowMasters always make a vehicle sound like the exhaust needs to be repaired or replaced to me.

But to each his own ... Let us know if it picks up any better gas mileage ... I'm always interested in saving money
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post #9 of 52 (permalink) Old 07-31-2009, 01:58 PM Thread Starter
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Quote:
Originally Posted by Yeggster View Post
Just personally I've never liked a noisy exhaust ... FlowMasters always make a vehicle sound like the exhaust needs to be repaired or replaced to me.

But to each his own ... Let us know if it picks up any better gas mileage ... I'm always interested in saving money
I am not expecting any increase in mpg from just a muffler. However I will advise on fuel economy after the install.

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post #10 of 52 (permalink) Old 07-31-2009, 02:08 PM
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For me, any gains in mpg is lost with me being a bit heavier on the "skinny" peddle to hear the pipes!

Sweet looking GTO by the way...I'm digging the blacked out look.

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Mods to date - Goodyear Duratrac 245x75 17's, 1.25" Fred Goeske spacers, 2" Daystar lift
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