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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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