to those who run externally venting wastegates..

[sergei]

I have 2 externals on my Celica, and they are plumbed back in, and I tell you when they are open it is friggin loud even through the exhaust, I hate to hear what it would sound like if wastegates were venting straight out...

[MR2SIK]

Come to Nelson, the home of externals on otherwise standard cars..
Evos and rwd Nissans are the main culprits.
I used to appreciate them because it signified that the car was reasonably modded and most likely quick, not anymore


Ban them on cars that still run factory turbos with 'internal' gates, and the majority of the problem will go away.

[rollaholic]

its never been legal to my understanding, so banning them on "standard" cars to let the cool kids feel special again wont change anything.

[Crucible]

I agree externals opening to atmo is a bit rice now, im plumbing mine back in soon, reckon the car would be heaps nicer to drive, especially on long trips!

[escortman]

mines internal and i have the option of maiking it a screamer but i like the look of how its welded and plumbed in and when i run a striaght through exhaust i can here the exhaust change note anyway

[MR2SIK]

Yea I get many comments on how loud my external is

just the factory ct20b into 3" downpipe into about 30-40cms of exhaust pipe into a rps muffler

[Bazda]

The reason why i like it venting.
1. If your turbo isnt spooling properly or has a leak you will notice the wastegate open later.
2. if you IC piping has a slight leak you will also notice the wastegate open later or not be as loud
3. If your engine is loosing power you will notice the wastegate will open later.
4. Or if something really F'ed up is happenign ur wastegates wont open

[RedMist]

The reason why i like it venting.
1. If your turbo isnt spooling properly or has a leak you will notice the wastegate open later.
2. if you IC piping has a slight leak you will also notice the wastegate open later or not be as loud
3. If your engine is loosing power you will notice the wastegate will open later.
4. Or if something really F'ed up is happenign ur wastegates wont open

A boost gauge won't tell you that?

[Bazda]

The reason why i like it venting.
1. If your turbo isnt spooling properly or has a leak you will notice the wastegate open later.
2. if you IC piping has a slight leak you will also notice the wastegate open later or not be as loud
3. If your engine is loosing power you will notice the wastegate will open later.
4. Or if something really F'ed up is happenign ur wastegates wont open

A boost gauge won't tell you that?

Do you always look at ur boost gauge while ur racing?

I had a leak in the intercooler piping, but bosot gauge was still reading what I set it on, but car wasnt making any external noises.
As the boost controller was trying to compensate for the loss in pressure by holding the gates closed.

[sergei]

hmm as I said above, I can hear wastegates open, even if they are plumbed back in. The change in note is very noticeable - when they are closed I get normal turbo car hum (even on full throttle the noise is pretty sedate which is surprising as I have 3" straight through exhaust), when they are open it sounds like one of those group N evos on full throttle.

[Leon]

Like it, or don't like it. Makes no difference.

Straight to atmo is not legal for road, not legal for race.

[cat007]

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.

errr - sorry but I am never going to be happy with how much they pick on noisey exhausts when there's busses blasting around town WAY louder than most cars. And when there's 10 busses to 1 "loud" car...... I have yet to see busses be ticketed for "driving in a mannor likely to cause annoyance/disturbance" (both are $600 tickets BTW), but I assure you, seeing 10 busses as I walk up the road in my lunch break is a LOT louder and annoys the hell out of me more than seeing 1 "loud" car......

[Dell'Orto]

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.

errr - sorry but I am never going to be happy with how much they pick on noisey exhausts when there's busses blasting around town WAY louder than most cars. And when there's 10 busses to 1 "loud" car...... I have yet to see busses be ticketed for "driving in a mannor likely to cause annoyance/disturbance" (both are $600 tickets BTW), but I assure you, seeing 10 busses as I walk up the road in my lunch break is a LOT louder and annoys the hell out of me more than seeing 1 "loud" car......

Busses generally dont go thrashing around suburbs at 2 or 3am...

[Lloyd]

I have 2 externals on my Celica, and they are plumbed back in, and I tell you when they are open it is friggin loud even through the exhaust, I hate to hear what it would sound like if wastegates were venting straight out...

I think people miss that fact. As you know the turbo essentially acts like a muffler so with the wastegate bypassing the turbo it sounds like you have one less muffler in the system

As for replying to cat007 on this thread, I wouldn't even know where to start. You have a crap attitude towards this which isn't going to change so there is no point even arguing the matter.

[cat007]

Busses generally dont go thrashing around suburbs at 2 or 3am...

So the issue is that these "clowns" with external's venting to amtosphere is that they are blasting around at 2 or 3am? What if they didn't - what if they only blasted around during the day - you're saying that would be ok then?

Does anyone work in the center of Auckland? Ever tried to have a conversation while walking along K road or Queen st? All is well and fine until, (wait for it), a bus drives past.....

[cat007]

As for replying to cat007 on this thread, I wouldn't even know where to start. You have a crap attitude towards this which isn't going to change so there is no point even arguing the matter.

Hey HRT

I think the problem is that I don't drive around at 2 or 3am blasting away on full boost annoying everyone and I never hear anyone doing such things (even though I've lived on the north shore for about 4 years).

I can understand the problem though. Of course idiots with the GSR's and Evo 1-3's (someone commented on the fact that its these clowns that put external's on) that boost around city/urban streets.

Perhaps its the fact that I don't want to get rid of mine as I like it. Mine doesn't sound like "white noise" like every evo/gsr/vr4 out there.....

[IH8TEC]

your missing the point, get away from all the bus crap, same with harleys, not gonna change

IT IS ILLEGAL, end of story.

[RedMist]

Do you always look at ur boost gauge while ur racing?

I had a leak in the intercooler piping, but bosot gauge was still reading what I set it on, but car wasnt making any external noises.
As the boost controller was trying to compensate for the loss in pressure by holding the gates closed.

I never look at any gauge while racing. Even if I did, I'm often shaken so badly in the car I couldnt read it. However note a fault, like not enough power, change in exhaust note, I'm on those gauges like Sergei on Open Source. I am planning, if Link ever sort their shit out, to log everything, boost pressure, RPM, Boost Control, oil pressure, shock movement... in the mean time I'm going to purchase an EeePC to log with.

It does sound like that I need to listen for the Garretts wastegates opening.... or figure out some way of producing a warning light based on RPM and wastegate actuation.

[IH8TEC]

warning lights would be primo in your case, but again, how to use the outputs on the g3.

[flygt4]

i have to admit it can be useful to have the noise as it gives a very quick indication that soomething is not right.

but thinking about it, there would still be a noticable change in exhaust tone with as plumbback anyway, and wouldnt running 2 boost gauges , one from the turbo and one from inlet manifold indicate the same thing? if possible with some sort of big f off warning light to indicate a major difference between the two?

as already stated

a) its illegal, no way around that, no way to justify it
b) it doesnt really sevre any purpose unless you're racing

purpose of this thread was to alert those who havent caught on yet, that it actually is illegal, and even though its been tolerated up until now, things appear to be about to change.
i bet certain people in this thread will be the first to post up to the tune of "the cops picked on me, and greenstickered my car because i have an atmo wastegate, what BS, its so unfair, it revenue collecting" etc etc.