to those who run externally venting wastegates..

[method]

Not having to plumb it back in. Spend the $100 or thereabouts on something useful. Like a race helmet which i still need to buy or some redline gearbox oil.

Gate still works the same, thats all that matters in my books.

The $150 i get per week doesnt buy me much, especially seeing as i need to drive to the city from the end of the north western motorway every day. $100 is a lot for me

Is there any benefit not venting it to atmos?

$150 a week? You need a new job

I dont have a job, your taxes are all mine! hahahaha.

[sergei]

Whoever puts screamer pipe and boosts it on the street is inconsiderate moron.

[solitaire]

Whoever puts screamer pipe and boosts it on the street is inconsiderate moron.

+1, Infact, +most

assuming everyone has free flowing aftermarket exhausts... what the actual benefit of venting to atmos?

If you had an exhaust that a so free flowing that there is no interference or back pressure in the wastegate dump pipe - then the actual exhaust would be too loud.....

Ok work with we me, i guess what i am saying is if you have an exhaust that can flow well enough to prevent boostcreep etc what is the benefit in venting to atmos?

[sergei]

Ok work with we me, i guess what i am saying is if you have an exhaust that can flow well enough to prevent boostcreep etc what is the benefit in venting to atmos?

The thing is that the creep usually happens AFTER they put free flow exhaust.

[solitaire]

Ok work with we me, i guess what i am saying is if you have an exhaust that can flow well enough to prevent boostcreep etc what is the benefit in venting to atmos?

The thing is that the creep usually happens AFTER they put free flow exhaust.

Oh... So whats the point in venting then?

[sergei]

The point is when they put free flow exhaust suddenly there is no restriction which normally favours waste gate pathway, which leads to the flow preferring turbo path way. To eliminate this there are 2 ways: either separate wastgate flow completely or join it further down the exhaust so the turbulence from turbine would not affect it.

[deaf_rattle]

im all for it.
people that drive so their screamer pipes can be heard in carparks are dicks.

Anyone who boosts through carparks are dicks, screamer or no screamer

well yeah, but i thought that went without saying.

[deaf_rattle]

Righto I would like to add my 2c to it:
My mate had normal plumb back in his car, when he sold it the new owner requested for screamer pipe to be fitted.
When I was in the car, I felt really sick, like I was in a gas chamber, I though "it can't be very good in the long run", VERY STUPID unless you are suicidal.

OK - maybe you're "mate" was on full boost all the time or maybe the screamer pipe really was pointing INTO the cabin.... - or maybe there's something wrong with you.....

I blew 2 of 3 exhaust gaskets between head and manifold while I was on the dyno - MASSIVE exhaust leak - a serious amount of exhaust gases were venting into the engine bay. It took an hour of driving home for me to say to my partner "can you smell exhaust gases?" who replied "yes - only just now I've noticed it" - and that was after an HOUR of constant exposure.

I think if you've got an external - you should have to have a gas analyzer in the car and you should have to drive around for an hour. If it's over a certain amount - then sure - its dangerous. But I doubt it will be............

you would be surprised how much co you will see on the "analyser"
should see how much co you breathe in on a friday night up queen st!

[deaf_rattle]

Carbon-monoxide is the killer. It's also odorless.
A well tuned car shouldn't be giving off much at all..

most cars with working factory cats will give off more than 1500ppm of co.

I wouldnt want to breathe even a 1/4 of that for very long

thats why the exhaust exits out the back...

[cat007]

I dont have a job, your taxes are all mine! hahahaha.

You better have a VERY bloody good reason

[method]

Because i have 10 kids to support

[cat007]

Because i have 10 kids to support

Dude I'll buy you a packet of condoms. Now give me my $150+ in tax a week!

[Jooce]

screamer pipes sound awesome.

[Jooce]

[slighty_sykotic]

Now this i aggree with... the excessive acceleration rule as i saw it was to give the cops a legal way to stop this dragging at the lights phenomenon... but it gets used everywhere. I am pretty sure if you dont loose traction and dont exceed the speed limit they cant do you though... think there is a post on here about that? have a look on the transit website and print it out for the next time you get done

Just a side issue here.

You are right in principal, yes you must be breaking another law to get done for this. BUT, that law can be anything.

And there is a law that states "you must not drive in a manner likely to cause annoyance to others".

Its a pretty safe bet if you can get done for exc acceleration, you are also breaking that annoyance law, therefore making the exc acceleration a ticketable offence.

[solitaire]

Just a side issue here.

You are right in principal, yes you must be breaking another law to get done for this. BUT, that law can be anything.

And there is a law that states "you must not drive in a manner likely to cause annoyance to others".

Its a pretty safe bet if you can get done for exc acceleration, you are also breaking that annoyance law, therefore making the exc acceleration a ticketable offence.

Agreed, But assuming your exhaust was factory (i.e. quiet) you would be ok hopefully eh?

[slighty_sykotic]

Just a side issue here.

You are right in principal, yes you must be breaking another law to get done for this. BUT, that law can be anything.

And there is a law that states "you must not drive in a manner likely to cause annoyance to others".

Its a pretty safe bet if you can get done for exc acceleration, you are also breaking that annoyance law, therefore making the exc acceleration a ticketable offence.

Agreed, But assuming your exhaust was factory (i.e. quiet) you would be ok hopefully eh?

Yeah I would argue that. Only possible thing was if people were down the road further and were trying to pull out? I would say though your right, if your car doesn't make noise it shouldn't annoy others.

[flygt4]

externally venting wastegates are stupid . full stop.

i can see your point if its a temporary measure during the build of a car.

but essentially its a matter of common courtesy. you're being a prick for the sake of it. look at me, my car makes a loud noise, big $&#$% yay. so do lawnmowers. it doesnt sound at all pleasant, a lot of engine tones do sound pleasant at loud volume, but a wastegate basicaly emits white noise. how could you enjoy that? fact is that you dont, you do it to get attention from other people as you wind it up to 50km in 1st gear in a crowded city centre.

yeah real badass.

i try my hardest to drive off boost as mine isnt plumbed back yet, i hate the fact its venting externally.

if you choose to use one so be it, there are legitimate uses for external wastegates. it should, however, be plumbed through a muffler and behind the last passenger door.

if you are found with one you should get 7 days to fix it or your wof becomes invalid.

why is it the worst offenders i see seem to be evo 1-3's as well? they seem to get a real caning now

[99gtt]

i disagree with people doing it for wank factor . Mine is plumbed back in for wof purposes but i would love it to be atmosphere . I dont do mods to my car for other peoples benefit . When i put my new engine and setup in i will run the wastegate plumbing to the rear of the car as a 2nd exhaust.

[IH8TEC]

i disagree with people doing it for wank factor .

thats 95% of the reason people do it. mine was like jeremy says, easy to do during the build. it will be plumbed back in shortly not just for wof reasons, but because i'm sick of it. it does get really annoying, not too bad running 25psi cause it's not open for that long. but when i run 8-10 everyday, the thing is going off for alot longer.