Flowmaster 50 SUV installed in a 5.7L HEMI - Jeep Commander Forums: Jeep Commander Forum
Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 19 (permalink) Old 07-07-2010, 07:06 AM Thread Starter
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Flowmaster 50 SUV installed in a 5.7L HEMI

Installed the Flowmaster 50 SUV muffler which I originally bought for my previous 4.7L Commander and kept the stock resonator.

Well its the first time for me to install aftermarket mufflers, so I feel the sound a bit loud ,, at least for me .. but its nice and really tells that there is V8 under the hood ,,, and it keep telling me that the engine still running while driving

The sound remain even at high speeds !! tested till 85 MPH ,, which I didn't like as I miss the quite interior at constant speeds. Honestly I hated the muffler the first two days and wanted to remove it but started to like it a bit although I miss the quite Commander! and I'm not sure I will keep it or not !

The muffler I used was 52556 type, 2.5" ,,, (Robby your name is there )




Side by side with the stock muffler.



Video comparing the sound before and after ..
http://www.youtube.com/watch?v=7TqTzgP9Ydo



Playing around with the Flowmaster in quieter location ..
http://www.youtube.com/watch?v=ZRxz_RrFiMY

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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Last edited by Ahmed; 07-07-2010 at 07:17 AM.
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post #2 of 19 (permalink) Old 07-07-2010, 09:02 AM
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Wow!
I'm famous.
Sounds good.....I understand your misgivings about being able to hear it at cruising speeds.
I recently posted about my Chevy truck w/Gibson exaust and how I find the nice V-8 tone becomming rather tiresome at speed.....far worse with the trailer attached.

Proving once again, sound is subjective.
But, I also think as I've grown older (bummer, sort of) I appreciate the quiet more. (EGADS! Never thought I'd say THAT!)

Rob


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post #3 of 19 (permalink) Old 07-07-2010, 07:16 PM Thread Starter
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Join Date: Dec 2007
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You are absolutely right robby, sound is subjective, for some this would wonderful sound and just a noise for others!

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #4 of 19 (permalink) Old 07-13-2010, 09:16 AM
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If you ran the tailpipe out the back (straight out) vs having it terminate pointing down at the end of the Commander,
would that make a difference in the high way sounds?


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post #5 of 19 (permalink) Old 07-13-2010, 10:19 AM Thread Starter
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I'm not sure if that will help !

And you know I like it when the exhaust blows of the street dust when accelerating

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #6 of 19 (permalink) Old 07-31-2010, 08:04 AM Thread Starter
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Join Date: Dec 2007
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Update, I started to get used to the sound and actually start to like it ,,

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #7 of 19 (permalink) Old 08-31-2010, 11:00 AM
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Great post and videos! Thank you Ahmed.
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post #8 of 19 (permalink) Old 10-19-2010, 01:04 PM
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Hey great post for the flowmaster 50 on your XK. I am also considering the same setup but at interstate speeds how is the sound inside the cabin? My wife is concerned that it will be to loud and noisy for the family on longer trips. So, i was wondering if you could comment on that or have any experiences positive or negative from inside the cabin?

2006 XK Limited
5.7 Hemi
No mods yet...
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post #9 of 19 (permalink) Old 10-19-2010, 03:27 PM Thread Starter
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Join Date: Dec 2007
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Quote:
Originally Posted by wargenn66 View Post
Hey great post for the flowmaster 50 on your XK. I am also considering the same setup but at interstate speeds how is the sound inside the cabin? My wife is concerned that it will be to loud and noisy for the family on longer trips. So, i was wondering if you could comment on that or have any experiences positive or negative from inside the cabin?
I'm not sure what the interstates speed are over there !! but in case of A/C on and windows up and driving on steady speed between 50 and 78 MPH the sound can easily be heard from inside the cabin, specially in the second and third rows, when you go over that speed the higher RPM reduces the loudness and the outside air overcomes the exhaust sound.

During nice whether and medium temp when you rather keep the windows down you might not like the exhaust sound when the MDS kicks in and engine switches to 4 cylinders !!! ,,, you know it sounds like an engine with several spark plugs totally dead ,,

if you like quietness or your family are sensitive to sounds then they might get disturbed ... ,, and they might like it but sounds acceptance if total different from each other.,,, the boys like its sound ,, girls they don't care

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #10 of 19 (permalink) Old 06-28-2011, 12:21 PM
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Do you know what size pipe and how much you need to make the extension piece? Did you keep you stock exhaust tip?

2007 Jeep Commander Limited, 5.7L HEMI, Stone White. 2" RC lift with Robby's spacers. Goodyear Duratracs 245/75/17. Magnaflow catback exhaust. AFE Stage 2 Cold Air Intake.
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