I just picked up a super 40.. and I dont have the time to go get echaust adapters to put the muffler on, So Im just running the cat and no muffler.. Sounds pretty badass like that, but I will be fixing it either tomm afternoon or saturday. I was just wonder if anyone else runs itlike this.. Will i damage anything or cause problems for running the echaust like this?? It actually shifts gears smoother and idle's better without the muffler.. any info would be great thanks... Again Im just going to need to run this for 2 days maximum.. is that 2 long???

 

my jeep is like that, just a straight pipe where the muffler used to be. i took mine off because i ripped the stock muff in half on some rocks. but to answer the question no it will not hurt anything, and yes it sounds sweet, just roll with it like that for a while. (i hate blowmasters...)

 

Ive been running like that for a few months now love the sound, though the drone on highway speeds is terrible.

 

Yeah for 20 bucks.. i couldnt turn it down. My stocker was falling apart!! I dont even have a straight pipe coming outta the converter.. its just converter and then its open.. Like i said I will only be rocking it this way till the weekend! I cant have it that loud.. I use it for hunting so driving to my hunting spot a 4 am, I mine as well try shooting them from my ****ter!!! but thanks.. both o2 sensors are intact still, just has no back pressure for now!!

 

Well, the ex-State Inspector in me says that being just open at the cat may cause emissions to leak inside the passenger compartment (thus it wouldn't pass)... Probably not that much, but just the same it may be a good idea to keep some windows open for ventilation or buy a cheap elbow/turnout pipe from autozone/o'reilley's/Advance Autoparts and stick it in there so the exhaust goes out the side from under the Jeep. Who knows? You may not have any exhaust leaking inside! It's just a thought and a safety precaution. I'd like to see what that sounds like, though! Can you post a video of it?

 

Yeah.. I drove it around for a little bit today.. and didnt smell anything. But I will be going to the parts store after work, to get some adapters and a exhaust hanger. As for the video.. Im not sure bud.. I will try.. Maybe my buddy can video it with his iphone and help me post it up!! Sounds pretty good actually.. Just suc the damn heat shield on the converter is rattling.. Ill give it a try tomm to get a vid..

 

x2 would like to hear i have a 30inch glasspack and have mixed feelings my wifes xj has a 40 seres flowmaster but has a huge exhaus leak so i dont know what it sounds like yet getting filed this weekend

 

And here in NJ , they do not do emissions anymore.. well except for vehicles 95 and older. 95 and newer they just plug a scan tool in and scan for malfunctions.. Plus mines good till next september!!

 

I ran with a straight pipe for awhile probably 2 months or so. Just ask my neighbors I actually took a video of it when I ran without a muffler. I thought it sounded beastly but the drone is horrendous. Video below, just click the picture.

 

Does it sound good???

 

the 95 and newer is OBD II and is still an emissions test. The ASM where they stick the sensors up your tail pipe is the old emissions test because those cars came with OBD I. On 95 and older, you can have a check engine light on, and it can still pass if the emissions readings are low enough. On 95 and newer, check engine light is an automatic fail. However, the visual inspection verifies that the exhaust evacuates out from under the passenger compartment. But since you won't need inspection until next September, then you can do whatever you want until then! I used to do all sorts of stuff and switch it back for inspection time! I'm hugely in favor of that! Keep in mind, that I'm here in Texas.... the vehicle inspection laws may differ slightly in NJ.

 

I broke my exhaust on the trail and had to hacksaw it off after the cat in order to finish. I have yet to get it fixed and the noise isn't too bad. However, I noticed a big loss in mpg afterwards but I'm not sure if I can relate that to having no muffler. Can anybody comment on that?

 

I drove mines for 2 months and didnt notice any gain or loss in mpg. It stayed relatively the same. I even tracked my milege for those 2 months. I was going to leave the muffler off but my neighbors started complaining especially since I leave for classes at 7AM in the morning and need to drive through the whole damn neighborhood.

 

Yeah my issue is it almost coincided with me putting 35s on. I only had 2 weeks on em and didn't lose a lot per tank but after I cut the exhaust I lost almost 100mi per tank. I leave for work at 6am everyday and yes, people HATE it! Haha

 

My buddy's Wrangler is like that. Cut off after the cat. Sounds nice. But its a little bit to noisy in the cab.