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 Post subject: 06 KJ 3.7L Exhaust Question
PostPosted: Mon Aug 21, 2017 4:24 am 
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Hello everyone, i'm new to the forum and I have a 2006 Jeep KJ 3.7L sport and the question of what muffler to get has been tossed around a lot but for my vehicle I was wondering what would be the "best" way of modifying the exhaust so I can hear that V6, original thought was to go for a muffler delete but I hear the whole controversy of "you'll lose back-pressure so you'll lose torque" so I was considering on just changing my muffler to a Flowmaster Super 44 or also a resonator delete, whats the loudest, etc. Thank you in advance


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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Mon Aug 21, 2017 11:14 am 
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Gibson MWA

Quiet at idle, but is essentially a straight pipe at full throttle. You don't want back-pressure then.

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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Wed Aug 23, 2017 3:51 pm 
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Muffler delete will be super loud, you can test it by unbolting the muffler and removing the back half of the exhaust. It's a little hard to manuever out from underneath, but not too hard of a job. I run a cheap glass pack, it's not too loud at idle and still lets you hear the engine rev

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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Wed Aug 23, 2017 8:52 pm 
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GordnadoCRD wrote:
Gibson MWA

Quiet at idle, but is essentially a straight pipe at full throttle. You don't want back-pressure then.


Wow did my research on gibson they seem really good but i kind of want a decent sounding idle too.

Laserfishy wrote:
Muffler delete will be super loud, you can test it by unbolting the muffler and removing the back half of the exhaust. It's a little hard to manuever out from underneath, but not too hard of a job. I run a cheap glass pack, it's not too loud at idle and still lets you hear the engine rev

Sent from my SM-G930V using Tapatalk


I'm going to unbolt the muffler and see how it is if i'm not a fan I'll probably just commit to the flowmaster


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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Sat Aug 26, 2017 9:36 am 
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Xdanielb wrote:
GordnadoCRD wrote:
Gibson MWA

Quiet at idle, but is essentially a straight pipe at full throttle. You don't want back-pressure then.


Wow did my research on gibson they seem really good but i kind of want a decent sounding idle too.

Laserfishy wrote:
Muffler delete will be super loud, you can test it by unbolting the muffler and removing the back half of the exhaust. It's a little hard to manuever out from underneath, but not too hard of a job. I run a cheap glass pack, it's not too loud at idle and still lets you hear the engine rev

Sent from my SM-G930V using Tapatalk


I'm going to unbolt the muffler and see how it is if i'm not a fan I'll probably just commit to the flowmaster


So you don't like to talk to others in the cabin going down the road ?
Look up Flowmaster Drone , ran one for a while on the KJ never again

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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Sat Aug 26, 2017 12:02 pm 
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tommudd wrote:
So you don't like to talk to others in the cabin going down the road ?
Look up Flowmaster Drone , ran one for a while on the KJ never again

Tom, I remember riding with you in your black Kilimanjaro KJ (going to town to pick up a cutting wheel and some bolts for my KK's rear sway bar IIRC). Your exhaust note sounded great at the time. Was that a Gibson?

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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Sat Aug 26, 2017 7:25 pm 
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lfhoward wrote:
tommudd wrote:
So you don't like to talk to others in the cabin going down the road ?
Look up Flowmaster Drone , ran one for a while on the KJ never again

Tom, I remember riding with you in your black Kilimanjaro KJ (going to town to pick up a cutting wheel and some bolts for my KK's rear sway bar IIRC). Your exhaust note sounded great at the time. Was that a Gibson?


Magnaflow
and its still on there ! LOL

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03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 Goodyears/ 4.10's etc, 04 Kilimanjaro Edition loaded


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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Mon Sep 25, 2017 3:24 am 
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Not a fan of Flowmaster. It is annoyingly loud.


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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Sat Oct 21, 2017 5:06 pm 
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I just put on a Flowmaster Super 44 to my '04. It's fun but I'm going to get a replacement down the road. It has a drone that's easy enough to avoid but still bugs me. I was thinking MBRP?


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 Post subject: Re: 06 KJ 3.7L Exhaust Question
PostPosted: Sat Oct 21, 2017 9:06 pm 
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rhyanb12 wrote:
Not a fan of Flowmaster. It is annoyingly loud.

Depends on what model you buy.
My brother in law has a 1992 Toyota pickup with 4 cylinder and STOCK exhaust, and it's louder than the Jeep CRD, Either inside or out. But the Jeep with the 50 delta force has a deeper tone.
If you get a stainless steel one (whatever brand) if the drone is too loud you can wrap it with header wrap to make it quieter still, without worrying a about it corroding through.

_________________
'06 Lbrty Sprt CRD 147Kmi

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauge mount

IDParts New
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

Flowmaster 942550
Carter P76611M
GM 12611872
Hayden 2986
GM 15017911
2010 Trans
Sonnax 44957
Transgo kit
AHS 45T TC
Cooper 51770

Future plans: GDE Trans&Hot-tune


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