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Thread: Exhaust systems, how they compare.

  1. #1
    Senior Member Getting Dirty superacerc's Avatar
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    Exhaust systems, how they compare.

    I was thinking instead of highjacking someone elses thread (which we were starting to do) lets have people rate their exhaust systems here so everyone knows what to expect upon changing the stock system out. I know i've nearly bashed my stock exhaust system to death and it's getting on its last leg so i'll be switching at least the muffler out and perhaps some of the piping probably by the end of the year

    Here are a few categories to rate the exhaust and feel free to add anything else.
    Interior Sound at Idle:
    Exterior Sound at Idle:
    Interior Sound at Freeway Speeds: (Does the sound drone in the vehicle, can you still talk to the people in the vehicle without raising your voice? etc..)
    Exterior Sound at Freeway speeds:
    Any performance gain advertised vs felt:
    Size of muffler vs the Stock setup: I.E. does it hang lower or higher than original, space taken up under vehicle etc..
    Overall impression:
    2007 Commander 4.7L, QTII, OEM Towing Option, tow hooks, 2"OME + 1/4" rusty's leveling spacer, Bilstein 5150 Rear Shks, Rear sway bar removed, 4xguard front skid, Offroad Unlimited Defender Roof Rack, Hella 500FF lights, 265/70/R17 BFG KM2 M/Ts 1.5" Rough Country Wheel Spacers
    http://www.theultimatejeep.com/showt...acerc-s-Garage

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    Lifetime Member Getting Dirty TrialByFire's Avatar
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    Here are some photos of my new Flowmaster setup. We eliminated the rear muffler and replaced the front unit, routing the exhaust high and hopefully out of the way of those tail-dragging obstacles. It's definately louder than the stock setup--a nice rumble at idle, loudest at midrange, then quieting down at the top end.
    I haven't had it out on the highway yet so I don't know the sound level cruising at 65 mph yet.





    '06 XK Limited, 5.7 Hemi, QDII, OME struts & HD springs, JBA UCAs, 285/70R17 BFG KM2, 4XGuard Sliders, 4XGuard Diff Guard, Fox 2.0 reservoir shocks, custom bumpers and Warn xi9000
    Wish list: SFA, in-dash Windows 8 PC
    http://www.fuelly.com/driver/Blade/commander

  3. #3
    Senior Member Getting Dirty superacerc's Avatar
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    Looks nice! 50 Series SUV?
    2007 Commander 4.7L, QTII, OEM Towing Option, tow hooks, 2"OME + 1/4" rusty's leveling spacer, Bilstein 5150 Rear Shks, Rear sway bar removed, 4xguard front skid, Offroad Unlimited Defender Roof Rack, Hella 500FF lights, 265/70/R17 BFG KM2 M/Ts 1.5" Rough Country Wheel Spacers
    http://www.theultimatejeep.com/showt...acerc-s-Garage

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    Lifetime Member Getting Dirty Sal-XK's Avatar
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    I don't want a loud muffler either. How hi is the tail pipe tucked up there? I've dragged mine a few times as well just figured if I ever pancaked it I would just have to cut some of it off to get home.

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    Lifetime Member Getting Dirty TrialByFire's Avatar
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    Quote Originally Posted by superacerc View Post
    Looks nice! 50 Series SUV?
    It's a 40 Series.
    '06 XK Limited, 5.7 Hemi, QDII, OME struts & HD springs, JBA UCAs, 285/70R17 BFG KM2, 4XGuard Sliders, 4XGuard Diff Guard, Fox 2.0 reservoir shocks, custom bumpers and Warn xi9000
    Wish list: SFA, in-dash Windows 8 PC
    http://www.fuelly.com/driver/Blade/commander

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    Senior Member Getting Dirty The_War_Wagon's Avatar
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    I'm looking at at adding a Super 44 to my Commander here shortly. Went by & saw my man who's going to do the install. Looks like 2 1/4 inlet/outlet, and center-out, by his measurement. Will be posting more details, once I acquire said muffler, and get it installed.
    '07 Jeep Commander, Rocky Mountain Edition - 287 V-8 - Superchipped - aFe Stage II R-5A CAI - Flowmaster Super 44 - 2" Daystar lift - Spidertrax spacers - 32x10.5x17 Cooper A/T's - Fastman throttlebody - Skyjacker 8000 shocks

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    Super Moderator Getting Dirty 07JeepXK's Avatar
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    Flowmaster 50 Series SUV muffler is the way to go on a 4.7 liter. Hands down....
    2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete

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    Senior Member Getting Dirty The_War_Wagon's Avatar
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    Question

    Quote Originally Posted by 07JeepXK View Post
    Flowmaster 50 Series SUV muffler is the way to go on a 4.7 liter. Hands down....
    I watched several Youtubes, of the 40, 44, and 50, and while the 50 was nice, I think for sound + performance, the 44 still tops it. Or I could be wrong.

    Why the 50 over the 44, in your estimation?
    '07 Jeep Commander, Rocky Mountain Edition - 287 V-8 - Superchipped - aFe Stage II R-5A CAI - Flowmaster Super 44 - 2" Daystar lift - Spidertrax spacers - 32x10.5x17 Cooper A/T's - Fastman throttlebody - Skyjacker 8000 shocks

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    Senior Member Getting Dirty BonesWK's Avatar
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    My Flowsound (Flowmaster knock off) Muffler on my 4.7.








    Interior Sound at Idle: Low, rumble
    Exterior Sound at Idle: Low Rumble

    Interior Sound at Freeway Speeds: 45 ish is a bit loud. Real deep. After overdrive kicks in its manageable. Havent had it up past 70, but im thinking about 75 she will get loud.

    Exterior Sound at Freeway speeds: Not sure
    Any performance gain advertised vs felt: Not really
    Size of muffler vs the Stock setup: just a replacement, I think its a little more tucked under there than the big old stock one.
    Overall impression: loud and I love it!! best 80 bucks I spent.
    Last edited by BonesWK; 04-02-2012 at 08:27 AM.
    Ryan ---- 2006 WK 4.7 QDII <- Click for Garage
    2.25" RR Lift - Front Bilstiens - Rear OMEs - 32" Wildpeaks - Saguaro 4x Shackles - Tail Light Guards - AFE intake - Rola - Exhaust
    Twitter Facebook ---- Chive On
    Quote Originally Posted by AJeepZJ View Post
    Can't wait to see that big girl on those fat meats!

  10. #10
    Lifetime Member Getting Dirty
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    I have the 40. It's only loud around 2,000-2500 rpms from 1st-3rd gear. But my buddies like it. I like it. It's awesome.

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