Forester_Ranger Posted January 5, 2005 Share Posted January 5, 2005 I knocked my muffler off my Forester a few months back off-roading. It runs fine without it and sounds like a import tuner now. I asked a guy who works on Subaru's if this would cause any problems. He said no, so I decided to leave it off. Now a co-worker told me that the back pressure from not having a muffler will cause a valve to blow. He said he heard it from a muffler shop when he inquired about doing it to his Honda. Do I risk blowing a valve on my Forester? Link to comment Share on other sites More sharing options...
frag Posted January 5, 2005 Share Posted January 5, 2005 Was told the same thing also but dont know if it's true. Though I think it would be the lack of back pressure that would cause the problem. Link to comment Share on other sites More sharing options...
blitz Posted January 5, 2005 Share Posted January 5, 2005 Like Frag says, the lack of backpressure (increased air-flow) will lean the WOT mixture a little bit. Subes map the open-loop rich anyway, so I don't think you'll have any problems. Link to comment Share on other sites More sharing options...
mtsmiths Posted January 5, 2005 Share Posted January 5, 2005 I cut the resonator off my '87 when the rear pipe was rusted and straight piped it out. Never had any issues for the next 50,000 + miles over 3 years. Link to comment Share on other sites More sharing options...
Subie Gal Posted January 5, 2005 Share Posted January 5, 2005 the only thing you're going to do... is risk a huge ticket... that's about it car should be fine. Jamie Link to comment Share on other sites More sharing options...
SevenSisters Posted January 6, 2005 Share Posted January 6, 2005 Do you want to sound like an import tuner? Link to comment Share on other sites More sharing options...
Chip Posted January 6, 2005 Share Posted January 6, 2005 Nothing p!sses me off more than people with noisey cars,(unless it's fat guys on noisey Harleys). What's the deal here anyway ? Why should everyone be forced to hear your car ? If your car is ugly I can choose not to look at it but if it's got no muffler,(or some noisey pipe which the manufacturer says gives you an extra 25HP), I have no choice but to hear it.....even at 02:00 in the morning. Do these kids think we're impressed by the sound ? They wanna be impressed ? I'll take the freakin muffler of my lawn tractor and mow my lawn at 3 a.m. !! You can ride around on a Harley with half-pipes and make all kinds of noise but my dog barks for 20 minutes and someone calls the cops. The good news is that most people grow out of it and since the population growth rate around here is almost at 0%, things should eventually get quieter. Link to comment Share on other sites More sharing options...
mtsmiths Posted January 6, 2005 Share Posted January 6, 2005 My '87 was no louder with the resonator removed and a straight pipe than our other '87 was with a full system. Just a different tone. Link to comment Share on other sites More sharing options...
RallyKeith Posted January 6, 2005 Share Posted January 6, 2005 With all of the Catalytic convertors in the system there is more than enough backpressure. Like Jamie said, the only problem you risk is a possible ticket. Keith Link to comment Share on other sites More sharing options...
MorganM Posted January 6, 2005 Share Posted January 6, 2005 Nothing p!sses me off more than people with noisey cars,(unless it's fat guys on noisey Harleys). What's the deal here anyway ? Why should everyone be forced to hear your car ? If your car is ugly I can choose not to look at it but if it's got no muffler,(or some noisey pipe which the manufacturer says gives you an extra 25HP), I have no choice but to hear it.....even at 02:00 in the morning. Do these kids think we're impressed by the sound ? They wanna be impressed ? I'll take the freakin muffler of my lawn tractor and mow my lawn at 3 a.m. !! You can ride around on a Harley with half-pipes and make all kinds of noise but my dog barks for 20 minutes and someone calls the cops. The good news is that most people grow out of it and since the population growth rate around here is almost at 0%, things should eventually get quieter. Chill out man; maybe not everyone likes everything you do.... I say leave it off as I'm sure it sounds better A thrush or thunderbolt glasspack might sound better also. Link to comment Share on other sites More sharing options...
mattocs Posted January 6, 2005 Share Posted January 6, 2005 I'd like to get a nice muffler on my Outback...something a little louder...but not annoying. When I had an open air intake on it, there was a nice sound. And over 4500 RPMs it sounds nice. Link to comment Share on other sites More sharing options...
Forester_Ranger Posted January 6, 2005 Author Share Posted January 6, 2005 I'd like to get a nice muffler on my Outback...something a little louder...but not annoying. When I had an open air intake on it, there was a nice sound. And over 4500 RPMs it sounds nice. I really like the sound without the muffler. And it's not quite as loud as some of those import tuner cars. Link to comment Share on other sites More sharing options...
MorganM Posted January 6, 2005 Share Posted January 6, 2005 I really like the sound without the muffler. And it's not quite as loud as some of those import tuner cars. Yeah I would imagine it's not very loud really. You still have catalytic converters which dampen A LOT of sound. Even with a single cat and no muffler on my old first gen Legacy it wasnt obnoxiously loud. It was no louder than my friends stock '99 Mustang GT.... in fact he said "I wish my Mustang sounded that good..." Link to comment Share on other sites More sharing options...
ACE Posted February 3, 2006 Share Posted February 3, 2006 if it's to loud your to old! I don't know about the back pressure deal on an engine like a subaru, I do know that two strokes will seize or have a complete lack of power with no back pressure because it leans out, I also know that high performance four strokes like yzf dirtbikes lose power just because the muffler packing burns out, My advice to you is leave it stock unless it is a battle wagon Link to comment Share on other sites More sharing options...
friendly_jacek Posted February 3, 2006 Share Posted February 3, 2006 Why would someone revive this after a year? Link to comment Share on other sites More sharing options...
a97obw Posted February 3, 2006 Share Posted February 3, 2006 As Robert D. Raiford of the "John Boy and Billy Big Show" out of the Carolinas would say: "A mans intelligence is inversely proportional to the amount of noise his machine makes. Loud pipes SUCK!" Link to comment Share on other sites More sharing options...
ACE Posted February 3, 2006 Share Posted February 3, 2006 As Robert D. Raiford of the "John Boy and Billy Big Show" out of the Carolinas would say: "A mans intelligence is inversely proportional to the amount of noise his machine makes. Loud pipes SUCK!" wow, for someone on a sight where they lift brats and add hood scoops to wagons, this certainly sounds didactic, oh well, guess this sight isn't geared towards the average 17 year old kid who can't resist a dig at the people who are always complaining about the kids with the loud civics and stuff. Sorry, I thought maby you guys would be a little less square and a little more fun to talk to. No offense, but so far this has been one of the less educational message boards I have beeen on, WAAAAAAAAYYYYY less interesting than snowest Link to comment Share on other sites More sharing options...
2X2KOB Posted February 3, 2006 Share Posted February 3, 2006 Ace, where did you go to school? Link to comment Share on other sites More sharing options...
zyewdall Posted February 3, 2006 Share Posted February 3, 2006 As Robert D. Raiford of the "John Boy and Billy Big Show" out of the Carolinas would say: "A mans intelligence is inversely proportional to the amount of noise his machine makes. Loud pipes SUCK!" To me having a loud car is a sign that you are either not a good enough mechanic to maintain your own car, or that you are too poor to maintain it properly (I know alot of people in the second category, and I can't really fault them). When in civilization, I don't pee on public sidewalks, and I don't let my cars get too loud. Simple courtesy. If I'm out in the country I pee where I want, and I don't worry about it so much if the muffler falls off. Link to comment Share on other sites More sharing options...
idosubaru Posted February 3, 2006 Share Posted February 3, 2006 running without a muffler will not hurt a subaru engine. Sorry, I thought maby you guys would be a little less square and a little more fun to talk to. you've posted 12 times, that's not a large statistical sampling. you take the replies of 2 people to be the sentiments of 5,000 members or whatever it is, that's not accurate deduction. anything loud can be annoying sometimes, everyone is entitled to an oppinion on that. trying to convince those that like being loud to be quiet is silly. for those that attempt to offend or find it funny to be loud just because it offends, awakens or otherwise upsets people well that's no different than the people that don't like it and you laugh at. it's a big circle you see. a pissing contest of sorts. can't we all just get along? No offense, but so far this has been one of the less educational message boards I have beeen on not sure what you're looking for. this is a subaru board. there is information on here regarding rebuilding just about any subaru motor and transmission made and members that have actually done the work with their own hands. if you have a question about something specific that hasn't been answered, then start a new thread. most auto forums i've been on talk about what their mechanics or shops have done and technical info is limited, that is not the case here. Link to comment Share on other sites More sharing options...
LosDiosDeVerde86 Posted February 3, 2006 Share Posted February 3, 2006 Nothing p!sses me off more than people with noisey cars,(unless it's fat guys on noisey Harleys). What's the deal here anyway ? Why should everyone be forced to hear your car ? If your car is ugly I can choose not to look at it but if it's got no muffler,(or some noisey pipe which the manufacturer says gives you an extra 25HP), I have no choice but to hear it.....even at 02:00 in the morning. Do these kids think we're impressed by the sound ? They wanna be impressed ? I'll take the freakin muffler of my lawn tractor and mow my lawn at 3 a.m. !! You can ride around on a Harley with half-pipes and make all kinds of noise but my dog barks for 20 minutes and someone calls the cops. The good news is that most people grow out of it and since the population growth rate around here is almost at 0%, things should eventually get quieter. damn canadian... Link to comment Share on other sites More sharing options...
LosDiosDeVerde86 Posted February 3, 2006 Share Posted February 3, 2006 I say leave it off as I'm sure it sounds better A thrush or thunderbolt glasspack might sound better also. i've got a thrush. it sounds pretty good Link to comment Share on other sites More sharing options...
ACE Posted February 3, 2006 Share Posted February 3, 2006 I still go to a small podunk school called tri-valley in interior alaska, why? And I guess I am just sick of people who automaticaly assume that because someone wants to take off their muffler they are going to be driving around a bunch of peoples houses at four in the morning and stuff. I personally just replaced my subys muffler with the stock one because I like it being quiet on the highway. I also have a jeep with NO muffler and it is REALLY loud, but I drive that out trails where no one else is. It's just kinda like when your mom nags you to wear another coat to school because she is cold. And as far as the the message board goes, by saying "educational" I was reffering more to the theme of the messages, not nessecarily the actual topics, it si a great fourum, I have already gotten some good info out of it that you can not find anywhere else. I was just reffering to the lack of jokes and....alright, vulgarities that make some other fourums so much more "educational" Link to comment Share on other sites More sharing options...
friendly_jacek Posted February 3, 2006 Share Posted February 3, 2006 I still go to a small podunk school called tri-valley in interior alaska, why? I didn't ask that question but guessed why it was asked very easily. Link to comment Share on other sites More sharing options...
burtonsnowman Posted February 3, 2006 Share Posted February 3, 2006 Ace, where did you go to school? A better question would be, "Ace, did you go to school?" Link to comment Share on other sites More sharing options...
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