pros and cons of dumping exhaust at the diff

[fuzzy2308]

as title says, any info whould be great also.

[Cobez]

Cons: It's illegal, can fill your cabin up with fumes and then you pass out and die when your car smashes into a building filled with people, and if you survive then you will have to deal with that (could get expensive).


Pro's: Sounds as tuff as nails on a 304 or LS1, sounds hell gay on V6's because you can't make a V6 sound good or like a V8 no matter what you do to it. It will still sound like a V6 in comparison to a V8.


I'm sure there is heaps more but those are my two main ones.

[jokerflingo]

Cons: It's illegal, can fill your cabin up with fumes and then you pass out and die when your car smashes into a building filled with people, and if you survive then you will have to deal with that (could get expensive).


Pro's: Sounds as tuff as nails on a 304 or LS1, sounds hell gay on V6's because you can't make a V6 sound good or like a V8 no matter what you do to it. It will still sound like a V6 in comparison to a V8.


I'm sure there is heaps more but those are my two main ones.

Is it illegal? Im trying to find this out but cant find a definite answer and well the legal guff makes no sense to me.

Division 2—Exhaust systems
148—Exhaust systems
(1) The outlet of the exhaust system fitted to a motor vehicle (except a bus) must extend:
(a) behind the back seat; and
(b) at least 40 millimetres beyond the outermost joint of the floorpan that is not continuously welded or permanently sealed; and
(c) to the edge of the vehicle, if:
(i) the body of the vehicle is permanently enclosed; and
(ii) the vehicle is not fitted with a vertical exhaust system; and
(d) no further than the edge of the vehicle at its widest point.
(2) The outlet must discharge the main exhaust flow to the air:
(a) if the vehicle is fitted, or required under a law of this jurisdiction to be fitted,
with an exhaust system with a vertical outlet pipe:
(i) at an angle above the horizontal; and
(ii) at least 150 millimetres above the cab of the vehicle; and
(iii) rearwards or to the right of the vehicle; and
(b) in any other case:
(i) horizontally or at an angle of not over 45
(ii) under 750 millimetres above ground level; and
(iii) rearwards or to the right of the vehicle.

Any Ideas?
Thanks
Matt

[greenacc]

hot exhaust blowing on the petrol tank ? Aside from heating the fuel and loosing power, hot petrol is more explosive, so I would not like to ride in your car with the mod mate...

[fuzzy2308]

hot exhaust blowing on the petrol tank ? Aside from heating the fuel and loosing power, hot petrol is more explosive, so I would not like to ride in your car with the mod mate...

Na there's nothing under there i probably should of mentioned that its a Ute and the tank is behind the cab away from anything evil.

[fuzzy2308]

qld modifications book

Exhaust systems
Exhaust systems must comply with Queensland
legislation which includes the following conditions:
• Exhaust headers (extractors) may be fitted to any
motor vehicle, provided:
they do not foul any part of the steering,
suspension, brake or fuel systems
all fittings for emission control equipment
(E.G.R. valve, oxygen sensor, pipes and so on)
are incorporated to ensure the vehicle maintains
compliance with Australian Design Rules for
vehicle emissions
exhaust systems must continue to comply with
relevant legislation or Australian Design Rules for
vehicle noise.
• The exhaust outlet must extend at least 40mm beyond
the furthermost outboard or rearmost joint of the floor
pan that is not continuously welded or permanently
sealed which could permit direct access of exhaust
gases to the passenger compartment, but not beyond
the perimeter of the vehicle when viewed in plan.
• The exhaust outlet, if to the side of the vehicle, must
discharge to the right hand side of
the vehicle and downwards at an
angle to the horizontal of not less
than 15 degrees and not more than
45 degrees.
• The exhaust outlet, if to the rear of
the vehicle, must discharge at not
more than 10 degrees above or 45
degrees below the horizontal.
• All exhaust and muffler systems
must be free of any leaks or
mechanical faults and should
be adequately supported.

[greenacc]

Ah, its a ute, thats totally different, you have a lot more freedom as you only have 2 doors, and i think the main issue with exhausts is they the outlet must be behind the rearmost doors, ( and away from the fuel tank LOL ). So the biggest issue i can think of for you is blowing black shyte all over the side or undercarriage. Why dont ya get some big side pipes like an AC Cobra !!

[jokerflingo]

Ah, its a ute, thats totally different, you have a lot more freedom as you only have 2 doors, and i think the main issue with exhausts is they the outlet must be behind the rearmost doors, ( and away from the fuel tank LOL ). So the biggest issue i can think of for you is blowing black shyte all over the side or undercarriage. Why dont ya get some big side pipes like an AC Cobra !!

Do you really think black dust/smoke etc would do much to the undercarriage especially when it points down sort of?



Thanks for the info keep it coming
Matt

[TUF UTE]

i have had no problems * above pic is my car * no issues with dust or undercarriage and its not loud, just a nice deep tone and its only a little before the diff so i have no issues with smell or anything, cops cant see it either, if u want a cheap exhaust i reccomend this 100% felt a bit of a change in pickup out of it too

[jokerflingo]

i have had no problems * above pic is my car * no issues with dust or undercarriage and its not loud, just a nice deep tone and its only a little before the diff so i have no issues with smell or anything, cops cant see it either, if u want a cheap exhaust i reccomend this 100% felt a bit of a change in pickup out of it too

Got a step by step guide of what you did? Just took off the rear part of the muffler and welded a tip onto the middle muffler?
What about it wouldn't be legal? Say if a coppa pulled ya over? Id really like to know if anything is which i don't think there really is?

Thanks
Matt

[fuzzy2308]

i have had no problems * above pic is my car * no issues with dust or undercarriage and its not loud, just a nice deep tone and its only a little before the diff so i have no issues with smell or anything, cops cant see it either, if u want a cheap exhaust i reccomend this 100% felt a bit of a change in pickup out of it too

cheers mate , how many mufflers r on it is it just 1?
do u have a dummy like a exhaust hanging from the back that doesn't go any where? so it looks like u have a standard exhaust.



keep em coming.....

[TUF UTE]

its still in normal place as the old muffler, i just cut off the old one, welded on a hi flow one and made a bracket for it. then cut a short bit of pipe off the old exhaust and welded it on to angle the sound to hit the ground. i cant see why it would be illegal , if ur in adelaide feel free to come check it out

[TUF UTE]

i thought about putting a dummy off the tow bar frame but ehhh why bother lol its a ute, its only finishing like 4 foot sooner lol

[jokerflingo]

its still in normal place as the old muffler, i just cut off the old one, welded on a hi flow one and made a bracket for it. then cut a short bit of pipe off the old exhaust and welded it on to angle the sound to hit the ground. i cant see why it would be illegal , if ur in adelaide feel free to come check it out

HAHA i am actually in Adelaide i live in the southern suburbs. I want to do this but i also want to keep the exhaust intact incase i get picked up and need to put the stock one back on. Just curious is the VS Commodore Sedan the same exhaust as a ute say from the CAT to to main centre muffler because if so i might visit the wreckers and grab one and use that so i can unbolt my current stock system and put it aside. Would it still sound better with a stock CAT and Main muffler dumped just before the diff u reckon?

Thanks
Matt

[TUF UTE]

go to advance auto salvage mate, they have heaps of vs utes and a **** load of vs ute sports exhausts, mighta been sold but out the back is a custom twin system, but also mines a v8 with a dump...i dunno how it would sound on a v6... mine has 2 more cylinders so it sounds more right :P

[jokerflingo]

go to advance auto salvage mate, they have heaps of vs utes and a **** load of vs ute sports exhausts, mighta been sold but out the back is a custom twin system, but also mines a v8 with a dump...i dunno how it would sound on a v6... mine has 2 more cylinders so it sounds more right :P

LOL damn you i would of got those 2 more cylinders but i didn't want to put in an extra $20 a week in fuel lol. Where is this Auto Salvage place as i usually just go to U-PULL-IT. Do you think a sedan exhaust would be the same because if so ill probably just grab one as im hopefully gonna spend more money on the audio and just want some extra noise for the exhaust :P + the extra 60rwkw and 6l/100km :P

On another note you wouldn't happen to know if the front speaker pods in the ute will fit 6.5 speakers instead of the stock 6's easily hopefully without mods by chance lol?

Thanks dude
Matt

[TUF UTE]

aas is on osullivans beach rd, see the manager dave and tell him Dave sent u in and he will look after u. top bloke. and with a vs, i reccomend a 2.5 inch system with hi flow can, super turbo muffler and then pipe straight thru all the way to the back, nice deep tone

[jokerflingo]

aas is on osullivans beach rd, see the manager dave and tell him Dave sent u in and he will look after u. top bloke. and with a vs, i reccomend a 2.5 inch system with hi flow can, super turbo muffler and then pipe straight thru all the way to the back, nice deep tone

Well this was the other option what sort of costs for this are involved for a CAT Back system as you mentioned above which i presume includes a high flow cat, 2.5inch, high flow muffler straight through to the back?
If i went to AAS and asked dave and said dave sent me would he cut me a deal of some sort cause i presume your good mates? If it was the right price i would definitely think about it as i thought about that CAT Back RedBack system on ebay for 2.5inch with a single muffler for $200

Any more info much appreciated
Thanks Dave
Matt

[TUF UTE]

ur budget for a exhaust is between 225 - 500 custom made depending on the brands and such u go with. i used to work at aas and daves a good bloke and i know hes not dodgy and looks after people and when i was working there 3 months ago there was about 5 commo utes with good new sports systems, so they can definitely help

[jokerflingo]

ur budget for a exhaust is between 225 - 500 custom made depending on the brands and such u go with. i used to work at aas and daves a good bloke and i know hes not dodgy and looks after people and when i was working there 3 months ago there was about 5 commo utes with good new sports systems, so they can definitely help

So say for a decent brand exhaust system with a High Flow CAT, High Flow Muffler and Straight Through 2.5inch Pipe with a Tip would that probably be around the $500 dollar mark. I presume this is the sort of setup these days if not please do fill me in. Also all i have heard of for exhaust brands ar Redback or Lukey.

Just looking for rough prices etc and i have a pit too if that doesn't include installation.

Thanks
Matt

[TUF UTE]

if u get a welder and a hi flow muffler ill help you do the same muffler ive got lol

[fuzzy2308]

:

if u get a welder and a hi flow muffler ill help you do the same muffler ive got lol

hey dave ,

if i cut off my muffler and dont put another 1 on whould it be way to loud????? would it sound stupid?




thanks mate


fuzzy

[jokerflingo]

:

hey dave ,

if i cut off my muffler and dont put another 1 on whould it be way to loud????? would it sound stupid?




thanks mate


fuzzy

If you left the rear resonator(muffler) off it would be alright as that's what i am thinking of doing but if you removed both it would be bloody loud i reckon. When opened up then it would be bloody insane lol.

If you get what i mean, keep the main muffler :P
Matt

[mischa]

If you left the rear resonator(muffler) off it would be alright as that's what i am thinking of doing but if you removed both it would be bloody loud i reckon. When opened up then it would be bloody insane lol.

If you get what i mean, keep the main muffler :P
Matt

easy to test that, just take it off for a run up the street. ive done it, but for a V6..... no.

[savage1987]

Dumpers are fine, don't bag them out until you've lived with a set for a while. My 304 VR has had twin 2.5" dumpers for years, I'm not dead from exhaust fumes and my fuel tank hasn't exploded, never had trouble with hot fuel either, car makes perfectly good power. I've been pulled over half a dozen times and never once been in trouble for noise or exhaust regulations.

Yes they are illegal, it's a choice the owner has to make.

Sam