Is having no mufflers bad? VX

[tdirago]

got a 2.5" with no mufflers, just cat.

it sounds good, just wondering if its bad for the engine ect? back pressure, fuel economy n stuff

only answer this if you're 100% sure, ive read so much shit that isnt true because people have no clue and post anyway

[General Xander]

no. car will retune it self to suit any minor changes you make, like the exhaust. the only problems you will get is from the cops coz of noise.

[klampy]

its bad as far as possible noise limits being breached as such, but as long as the piping is the appropriate size there will be no negative impact on the engine.

some say that you need a certain amount of backpressure in the exaust, but i certainly wouldnt be looking for that inside a muffler.

hth.

[wraith]

Illegal for a start.

[klampy]

got any vids of how it sounds?

[tdirago]

thanks xander and klampy... thats good to hear

i have noticed however that my economy use to sit at around 650, and now sits at 500... and there is a rich smell of unburnt fuel. could this be my o2 sensor failing or what?

ive noticed this only after getting it cut out as well, i know it isnt my oil, coolant, spark plugs, fuel injectors n shit because that usually detoriates over time, this just happened.

[tdirago]

nah, it sounds ####ing nice though man, gear 1 up to 6000revs is so nice hahah.. ill get 1 when i have a decent sound recorder

[klampy]

it certainly could be the O2 sensors. depending on how old they are it might just be time to replace them, they dont last forever...

[tdirago]

well i got done for walls (major defect, load of bs) so i need to put a stock catback on for rwc, so is it hard for the muffler guy to inspect or?

[walesy]

ive had twin 3in with no mufflers (just hotdogs) for bout 3 years now and no issues

[acarmody]

ive had twin 3in with no mufflers (just hotdogs) for bout 3 years now and no issues

Hotdogs are mufflers.

[Drewie]

well i got done for walls (major defect, load of bs) so i need to put a stock catback on for rwc, so is it hard for the muffler guy to inspect or?

Do you have to get a full roadworthy? If so I wonder how the roadworthy testers will be what with the new rules in Victoria for the testers.
You have probably read the thread on here about the new laws. New Victorian Roadworthy Laws

[tdirago]

it states "roadworthy certificate required yes", for walls. FOR WALLS! really? some cops are just the dirtiest people. they were pissed because the maccas i was parked at was closed and the other officer couldnt get in.

so this means i do need to swap my zorzt? or what. they didnt explain shit to me, just put the sticker on and gtfo'd

[Sabbath']

I dont understand why you're complaining about being defected for having whitewalls when they are a defectable item?

Would you also complain if you got a defect and/or an EPA for your exhaust being so loud?

If you dont want to modify your car to the letter of the law, dont complain when you get picked up on it. Simple as that.

[Jonno]

i can garrentee u itll sound like crap in everyone elses minds.

[tdirago]

I dont understand why you're complaining about being defected for having whitewalls when they are a defectable item?

Would you also complain if you got a defect and/or an EPA for your exhaust being so loud?

If you dont want to modify your car to the letter of the law, dont complain when you get picked up on it. Simple as that.

im not complaining i got a defect for either of them... and no, i wouldn't argue the exhaust because its obviously over the limit. what i am saying is, which u clearly have overlooked is why its a major defect and needs a rwc rather than just a minor and just needs a quick inspection by vic roads to tick it off like my smashed tail light...

http://a8.sphotos.ak.fbcdn.net/hphot..._7469655_n.jpg



and no jonnoo, everyone whose heard it says it sounds great for a 6.

[Sabbath']

Any roadworthy inspector passing a vehicle with sidewall damage should have their license suspended and be audited by vicroads.

[tdirago]

.... obviously you change the walled tyres like u would a smashed tail light, then get it inspected.. it doesnt need a full rwc, cops are just being huge wankers

[Sabbath']

.... obviously you change the walled tyres like u would a smashed tail light, then get it inspected.. it doesnt need a full rwc, cops are just being huge wankers

Oh well, if you're keeping the car in a roadworthy state as you should it shouldnt have been that much of a problem then

Major defect notices are there for when there is a MAJOR safety concern on a vehicle. Sidewall compromisation of tyres is a pretty major safety concern.

[undar8ed1]

wow the exhaust would be drone-y as f##k

[tdirago]

Oh well, if you're keeping the car in a roadworthy state as you should it shouldnt have been that much of a problem then

Major defect notices are there for when there is a MAJOR safety concern on a vehicle. Sidewall compromisation of tyres is a pretty major safety concern.

did u not look at the case study? and its a huge concern mate, ####ing huge haha

and the drone isnt that bad, plus im already use to it haha, adding a hotdog makes no difference, ive tried.

[rb26dett]

thanks xander and klampy... thats good to hear

i have noticed however that my economy use to sit at around 650, and now sits at 500... and there is a rich smell of unburnt fuel. could this be my o2 sensor failing or what?

ive noticed this only after getting it cut out as well, i know it isnt my oil, coolant, spark plugs, fuel injectors n shit because that usually detoriates over time, this just happened.

nah, it sounds ####ing nice though man, gear 1 up to 6000revs is so nice hahah.. ill get 1 when i have a decent sound recorder

Answered your own question.

I don't think it will hurt anything on your car, but your hearing may be a different story.

[kcpwns]

.... obviously you change the walled tyres like u would a smashed tail light, then get it inspected.. it doesnt need a full rwc, cops are just being huge wankers

I am guessing you have a massive p plate? and a big mangtastic sticker across your rear window? Dude seriously cops are doing their job. Whitewalling involves shaving the sidewalls of your tyres. if you dont see this as dangerous good luck to you then.

[Sabbath']

did u not look at the case study? and its a huge concern mate, ####ing huge haha

and the drone isnt that bad, plus im already use to it haha, adding a hotdog makes no difference, ive tried.

Yes, i did read the case study. And all it looks like is you trying to back pedal out of the shit you've gotten yourself into.

Whitewalls = Defectable.

Whitewalls = Shaving sidewall off your tyre, making them unsafe, and also removing load rating information.

Unsafe vehicle = Major Defect

But, if you drive everywhere manually shifting your auto with your hecktik exhaust to 6000rpm to make the chicks wet then it wont matter for much longer because something's going to have something blow up.

[kcpwns]

Yes, i did read the case study. And all it looks like is you trying to back pedal out of the shit you've gotten yourself into.

Whitewalls = Defectable.

Whitewalls = Shaving sidewall off your tyre, making them unsafe, and also removing load rating information.

Unsafe vehicle = Major Defect

But, if you drive everywhere manually shifting your auto with your hecktik exhaust to 6000rpm to make the chicks wet then it wont matter for much longer because something's going to have something blow up.