View Poll Results: What should be done?
STRAIGHT PIPE IT!!!
2
28.57%
SUCK IT UP!
5
71.43%
Voters: 7. You may not vote on this poll
Should I straight pipe?
JK Super Freak
Joined: Nov 2012
Posts: 1,104
Likes: 4
From: missouri
I don't know how removing the cats will affect performance (very little from what I understand) but you certainly don't want to remove the o2 sensors. The engine computer uses the readings from those to control the fuel mixture. It'll still run without them (although with the light on the dash on all the time) because there's a default tune the engine uses until the o2 sensors warm up but if you remove them then you're using that default all the time. This isn't ideal, especially with the elevation changes you mentioned.
JK Enthusiast
Joined: Jan 2015
Posts: 189
Likes: 1
From: Columbia, Mo
It wouldnt be hard to purchase a dynomax or magnaflow or any muffler (flowmaster, cherry bomb, etc.) for less than $100 bucks and just clamp it or weld it on. It will give it more growl but wont sound like a choking fart cannon. I took my stock muffler off just to see what it sounded like. It wasn't long before it was put back on.
Former Vendor
Joined: Apr 2013
Posts: 740
Likes: 1
From: Colorado
Dont do it.
I have Borla Long Tube headers that dont include cats. They sound great at idle but I needed to run a flowmaster 44 and a magnaflow resonator to keep it from sounding like a screaming prepubescent boy while driving. On top of that, you will lose power. I had it on a dyno and dropped roughly ~10hp.
I have Borla Long Tube headers that dont include cats. They sound great at idle but I needed to run a flowmaster 44 and a magnaflow resonator to keep it from sounding like a screaming prepubescent boy while driving. On top of that, you will lose power. I had it on a dyno and dropped roughly ~10hp.
Former Vendor
Joined: Jan 2015
Posts: 144
Likes: 1
From: Oceanside, CA
It wouldnt be hard to purchase a dynomax or magnaflow or any muffler (flowmaster, cherry bomb, etc.) for less than $100 bucks and just clamp it or weld it on. It will give it more growl but wont sound like a choking fart cannon. I took my stock muffler off just to see what it sounded like. It wasn't long before it was put back on.
JK Super Freak
Joined: Oct 2015
Posts: 1,181
Likes: 2
Mine has the cats gutted with no muffler, it just dumps over the exhaust.. It is loud and definitely not for everyone but I will say that it's not rice-ey sounding at all. I've been asked way too many times what v8 it has.. Although I don't think it sounds like a v8 and the people that asked probably have no mechanical knowledge, that's here nor there. I previously had the dynomax super turbo muffler and it sounded absolutely terrible..
Thread Starter
JK Newbie
Joined: Jul 2014
Posts: 11
Likes: 0
From: Prescott, Arizona
Alright, thanks to all of your wonderful input, for which I am very grateful, I have decided not to straight pipe the vehicle and live with it just being a quite jeep.
If you are just tuning in to the forum, the bottom line is this: don't remove the cats. Your jeep will lose too much performance for it to be worthwhile. If you want it to be louder, only work on the muffler and look into a new muffler system. That is all.
If you are just tuning in to the forum, the bottom line is this: don't remove the cats. Your jeep will lose too much performance for it to be worthwhile. If you want it to be louder, only work on the muffler and look into a new muffler system. That is all.
