Straight Exhaust (No Muffler) ?

[1989laredoxj]

You can do an exhaust strait through with no muffler but I kno on my 89 xj it gets pretty loud with no muffler. Also From the Cat back isnt very restricted on my jeep. Its where it goes over the cross member and by the front axle where its restricted. You want a good hp increse. It could be pricey but you will definatly feel it. Get a new exhaust manifold. Remove the Pipe attached to your original header and have a custom shop copy it with their mandrel bender. Then where it connects next to the tranny have that also copied. Then Run it to A high Flow Cat and A high Flow muffler. That would Give you really good sound and Really good performance. Could be pricey but Who says you cant take it off and sell it if you wanted to. Go with some stainless steal and you will be able to sell the exhaust for around what you paid for it.

 

[rockclimber24315]

Dude you could always run a cut out, you can get them from JC whitney for like $40 and weld it in before your muffler and then down pipe from the wye. You can select muffled or straight depending on your needs from a push-pull knob you mount in your cab.

 

[uncc civilengineer]

Dude you could always run a cut out, you can get them from JC whitney for like $40 and weld it in before your muffler and then down pipe from the wye. You can select muffled or straight depending on your needs from a push-pull knob you mount in your cab.

Now that's how you revive a dead thread....

 

[Gerr]

my muffler came off last year while wheeling and I stoped at a napa put on a piece of flex to aim the heat away from my gas tank and I loved the way it sounded........Till i got a $300 ticket for excessive noise. the cop had me at 130+ decibles at 1/3rd throttle and 108 at idle. Worst part was it wasnt a fix it ticket I had to pay and get it fixed before the judge was happy.

 

[fordtech]

Ah, a timeless and never ending arguement....

ya, were not running racing engines here.... you need some back pressure.

I'm running a regular old replacement cat, branded hi-flow, but looks like the stock one.... and a Dynomax cat-back. Sounds good, runs good, holding up fine after a NY winter.

I think most modern 'turbo' mufflers are all you need... flowmaster, dynomax, cherry bomb (not glasspack), whatever brand...
And run the catalyst please, despite the common belief its sucking 20 horse out of you, its not.

 

[summitlt]

On my 99 I replaced the muffler with some flexy pipe. In the cab its pretty much stock, outside its pretty loud, but nothing i worry about with police. Get lots of compliments on it, beinga I6 and all.

 

[Tenament]

Personally I think I6 sounds like crap without a muffler. My buddy's rig sounded like a gargling boat and it made me want to get off the trail =p. When my cat and muffler fell off trying to pull an idiot Toyota out of a mudbog (ironic huh!) I felt a huge loss of power. I personally think it's immature to run that sound too... (i'm only a teenager too.. weird!). I'm anti-ricer though.

 

[MountainRhino]

i knocked my muffler off on a rock the first week i bought mine, i let it go fo a while and noticed no perfomance difference. i liked the way it sounded, but everyone in the neighbor hood could hear me coming from a 1/4 mile away. tou guys at work thought it was our fuel truck coming when i got close to work. i put just a flow master on it and didnt finish plumbing the exauhst all the way back and it was still loud as hell. i finally added the remaining 3 feet of tubing and it shut that beast up ALMOST comp[letely. its amazing how three feet of pipe makes a world of difference.