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Old 12-02-2006, 01:11 PM   #1
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exhaust

I'm a fan of Dual exaust... my buddy wants me to go with duals and a flowmaster muffler... any feedback on this set up?

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Old 12-02-2006, 01:20 PM   #2
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seems excessive for a jeep. unless you've done a v-8 swap.

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Old 12-02-2006, 01:45 PM   #3
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I didnt go with dual exhaust on mine due to the pain in the rear routing around the gas tank in the rear. I did go with a flowmaster super40 and a 2 1/2" pipe exit though. Sounded alright but still wasnt as throaty as i wanted. I cut the cat off due to all my O2 sensors are in the front by the motor and it really opened the Jeep up. Tacking out and pulling a hard load it sounds dam near like a V-8 now. Not to mention the increase in mid range power. With the Airaid intake its a nice increase in power and grunt. Just replace the cat with a straight pipe and it will sound a ton better. Thats only if you dont have any sensors after it. Doesnt throw any check engine codes and only helps ya. As for the dual option, if i could of figured out a way to bend around the tank i would of done it. But it was painful enough just exitting it on the passenger side. But ive got the 19 gallon gas tank so dunno if that will make a difference.
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Old 12-02-2006, 03:28 PM   #4
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flowmaster is awesome but don't do dual exhaust. get what you want, not what your buddy wants.
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Old 12-02-2006, 05:40 PM   #5
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i just ordered a flowmaster muffler 50 delta series.. and am thinking of taking 2 pipes out right in front of the passenger tire...

I agree with above though unless you have a V engine there is no need for dual exhaust....
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Old 12-02-2006, 07:25 PM   #6
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I didnt go with dual exhaust on mine due to the pain in the rear routing around the gas tank in the rear. I did go with a flowmaster super40 and a 2 1/2" pipe exit though. Sounded alright but still wasnt as throaty as i wanted. I cut the cat off due to all my O2 sensors are in the front by the motor and it really opened the Jeep up. Tacking out and pulling a hard load it sounds dam near like a V-8 now. Not to mention the increase in mid range power. With the Airaid intake its a nice increase in power and grunt. Just replace the cat with a straight pipe and it will sound a ton better. Thats only if you dont have any sensors after it. Doesnt throw any check engine codes and only helps ya. As for the dual option, if i could of figured out a way to bend around the tank i would of done it. But it was painful enough just exitting it on the passenger side. But ive got the 19 gallon gas tank so dunno if that will make a difference.

Generations to come will thank you for adding your emissions to the atmosphere! Put the CAT back on! They are there for a reason!
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Old 12-02-2006, 08:23 PM   #7
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Generations to come will thank you for adding your emissions to the atmosphere! Put the CAT back on! They are there for a reason!
x2.

triple, if you do any rocks your pipes will be smashed. i guess it would look ok. i haven't seen it on a TJ though. just CJ's and maybe a YJ.
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Old 12-03-2006, 02:32 AM   #8
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Bigjeep i thought rocks as well i dont really go off roading for now (i got my jeep a month ago)... to be honest i wouldnt really go on rocks since i dont want to scar it.. I now am doing snow tours around since it just snowed a foot of snow here but i dont think i will be doing rocks in the future.. Apriciate your feedback though

Mudweiser at least put a high flow cat on.. Nature is something everyone takes for granted but remember my words... It can only take so much...

JAZJeepin from the pics i've seen around the net for dual exhaust all of the exhaust pipes are nearly hidden under the back bumper... on a single pipe going back to the muffler a dual outlet is preatty much for looks only. You will have just the same amount of "gain" with dual exhaust as you would with single exhaust but you will add more weight
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Old 12-07-2006, 06:08 PM   #9
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i am going to replace my exhaust system and was wondering if anyone knows what size the pipe is behind the converter on a 98 TJ 4.0 5 Speed?
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Old 12-07-2006, 08:15 PM   #10
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I'll let you know tomorow for sure.. From my 10 minutes look last week it looks like the cat is clamped to the muffler and then there is a 2.5" pipe that leads all the way back I think the muffler also has 2.5" intlet..

My flowmaster 50 delta (2.5" in/out) just arrived. It looks ok.. the finish is kinda cheap but what can you expect from ebay.. Anyhow its here and i will try to see what we can do at the shop.
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Old 12-07-2006, 09:38 PM   #11
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I'll let you know tomorow for sure.. From my 10 minutes look last week it looks like the cat is clamped to the muffler and then there is a 2.5" pipe that leads all the way back I think the muffler also has 2.5" intlet..

My flowmaster 50 delta (2.5" in/out) just arrived. It looks ok.. the finish is kinda cheap but what can you expect from ebay.. Anyhow its here and i will try to see what we can do at the shop.
why would a flowmaster off ebay look different than another flowmaster unless the dude you bought it from messed it up?

i believe mine was 2.25" in/out
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Old 12-07-2006, 09:43 PM   #12
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Exactly. The flowmaster my muffler shop installed on my Tahoe looked like a high schooler painted it with silver spray paint. None-the-less a new Flowmaster --- e-bay had nothing to do with it.
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Old 12-07-2006, 10:50 PM   #13
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yep thats what i ment the paint chipped off as i took off the sticker showing "intlet side" from the middle of the pipe.. If i'm correct flowmasters site sells stainless steel for 150 bucks or so.. my muffler from ebay is new or at least no singns of carbon in it, few dents here and there but those i could care less.. Ill see what i can do tomorow
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Old 12-08-2006, 08:30 AM   #14
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yep thats what i ment the paint chipped off as i took off the sticker showing "intlet side" from the middle of the pipe.. If i'm correct flowmasters site sells stainless steel for 150 bucks or so.. my muffler from ebay is new or at least no singns of carbon in it, few dents here and there but those i could care less.. Ill see what i can do tomorow
cool. let us know how you like it. i've heard a clip of the 50 and it sounds pretty deep. i have it saved on my computer but its in mp3/wav format. i got it off of www.exhaustsoundclips.com
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Old 12-08-2006, 08:35 AM   #15
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Ahh the environmentalists strike. A shot through the heart for sure. I wont be rude, but to each his own. I dont run cats on anything i build. And theres no restrictions or inspections in my area. But more power to ya, greenpower and all that jazz. You save the world and ill keep on, keepin on.
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Old 12-08-2006, 07:28 PM   #16
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So today i went to my mechanic to install it and he had no lifts left.. "busy" so on my way home i checked underneath.. The metal thing that protects the transmission is in the way.. how heavy is it? I think there were 3 bolts on each side holding it.. do i just remove them and then it will fall of or is there something else bolted on to it that i should watch out? Tomorow i'm going to visit my "best friend = dealer" to check out my knocking noise coming from the Tcase and all those drops of coolant around the front differential :S... Couldn't install it today though
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Old 12-08-2006, 07:58 PM   #17
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when the shop installed my muffler they had to drop the skid plate to get to the muffler. its just a couple of bolts.
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Old 12-08-2006, 09:34 PM   #18
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the tranny is held to the chasis using different bolts right? And its not that heavy?
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Old 12-12-2006, 05:15 PM   #19
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the tranny is held to the chasis using different bolts right? And its not that heavy?
There are 10 bolts total holding your skid plate to the jeep. 3 on each side into the frame and then 4 on the tranny mount to the skid plate. Easiest way is to just use a floor jack to support it when you drop it down. You can do it without one, but it's kind of heavy.
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Old 12-12-2006, 11:55 PM   #20
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Cool 1BLKJP thank. Today i just got my jeep back from the dealer. They say the waterpump was fine.. i had a leak in the radiator. Anyhow its shiny now Hopefully tomorow i will install the exhaust.. (I hate putting stuff off specially if its upgrades "devil face smiley")
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Old 12-18-2006, 10:44 AM   #21
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Cool 1BLKJP thank. Today i just got my jeep back from the dealer. They say the waterpump was fine.. i had a leak in the radiator. Anyhow its shiny now Hopefully tomorow i will install the exhaust.. (I hate putting stuff off specially if its upgrades "devil face smiley")


Let me know how it sounds... Im thinking about buying the same
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Old 12-18-2006, 12:09 PM   #22
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Let me know how it sounds... Im thinking about buying the same
if it means anything i have a clip of the 40.
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Old 12-18-2006, 03:22 PM   #23
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if it means anything i have a clip of the 40.
is it on youtube? send me a link
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Old 12-18-2006, 06:36 PM   #24
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Isnt the 40 really loud and somewhat high pitched? Anyhow my Jeep is on the lift right now and i got everything off but the muffler it self out of the pipe. There seems to be something holding it to the pipe after the cat. It looks like a screw that connects both of them together? Anyhow tomorow i should have it done. Once it's done I will get a sound clip of it
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Old 12-18-2006, 08:17 PM   #25
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Isnt the 40 really loud and somewhat high pitched? Anyhow my Jeep is on the lift right now and i got everything off but the muffler it self out of the pipe. There seems to be something holding it to the pipe after the cat. It looks like a screw that connects both of them together? Anyhow tomorow i should have it done. Once it's done I will get a sound clip of it
its not really loud. listen to the clip that i'll post to see for your self what it sounds like and whether or not its high pitched.
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Old 12-18-2006, 08:18 PM   #26
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is it on youtube? send me a link
no. i'll post it up here in a minute.

edit- here it is below. just click the big picture and a site with vid will come up.

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Old 12-18-2006, 09:48 PM   #27
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That does sound sweet thanks Bigjeep At least now i know i will get all the dogs on my street barking. The 50 is suppose to be even lower so we will see how it sounds.
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Old 12-19-2006, 08:45 AM   #28
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That does sound sweet thanks Bigjeep At least now i know i will get all the dogs on my street barking. The 50 is suppose to be even lower so we will see how it sounds.
yeah it'll sound good. you mean it should be deeper? or did you mean lower like you said?

let us know when ya get it installed
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Old 12-19-2006, 08:24 PM   #29
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yes deeper is what i ment.

I installed the muffler today and i still dont have a pipe after the muffler. I got one word. LOUD. It says its suppose to be quieter than the 40s though

I love how it sounds. Low, bassy, you can hear the air rushing through it on high rpms, but it's really loud and 15 minutes after driving it the paint it had on it started burning off.

Just to give you an idea of how loud it is.. it shakes the seats at 1000 rpm or when cruizing on 5th with 40 mph.

I have to install the pipe that leads it to the back and it will hopefully lower it. I don't think i will try to install a pipe that will go in front of the rear tire because it just wont be efficient since it will curve really sharp and it wont have any space.

Have any one else tried running a muffler like that with out a pipe after it? How much louder was it than with the pipe?
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Old 12-19-2006, 08:30 PM   #30
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so you mean there is no tail pipe? that makes a HUGE difference in noise! that makes it waaay louder than it would be if you had a tailpipe.

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