external wastegate

[Guss]

it will need some form of silencer to be technically legal.

[avinesh]

yea ill plumb it in will be free anyways

[l1ttle_d3vil]

and externals can't be any noisier than most BOV's.

Are you serious???

maybe i haven't heard any noisy externals then

[escortman]

hows a cop goning prove that its 2 loud anyway, unless ur cars like my mates old gtst that had factory turbo and stupid big gate it that could open up in neutral

[Mr. Mainstream]

and externals can't be any noisier than most BOV's.

Are you serious???

maybe i haven't heard any noisy externals then

Every Second RB Nissan down here does

[johndoe1025]

hows a cop goning prove that its 2 loud anyway, unless ur cars like my mates old gtst that had factory turbo and stupid big gate it that could open up in neutral

they dont have to prove with the new laws. if they "deem it to be too loud" its green stickered and off you go for a 90 dollar wof buddy, plus fines. i speak from experience. they dont even have to measure it

[matt dunn]

, no advantages though other than noise (which is also a disadvantage). Save weight just plumb it back in.

Not what I was told by the guys who tune my car,
and dyno tune cars all day every day 5 days a week.

Running it on it's own creates more power,
as no matter what size your main exhaust is,
or what angle you join it on,
the main flow is flowing along nicely, and you add the wategate flow into it
and it upsets the exhaust flow, which creates a small amount of back pressure all the way back to the turbo.

I run my car external all the way to the back and separate,

[deaf_rattle]

ill be running a seperate pipe from my wastegate.
Main reason is because if i ever need to take the turbo off, it makes things easier to unbolt the exhausts if they are seperate.

I dont want my exhaust off the wastegate to be noisy though, so it will be passing through at least one muffler and then exit behind the drivers door.

will see how that goes though.

noisy "screamer pipes" suck balls

[Bazda]

I have never plumbed mine back in because of back pressure as well.

+ It would be a major to plumb mine it!!! as I have 2 wastegates and 1 sits near ish the dump pipe so I cant fit the pipes back in, the only way is to run underneath the X member lol.

Another way would be plumbing it far down the ex system so it wont effect the flow as much as having it in the downpipe.

[escortman]

hows a cop goning prove that its 2 loud anyway, unless ur cars like my mates old gtst that had factory turbo and stupid big gate it that could open up in neutral

they dont have to prove with the new laws. if they "deem it to be too loud" its green stickered and off you go for a 90 dollar wof buddy, plus fines. i speak from experience. they dont even have to measure it

yeh but if your main exhaust is quite ie no bigbore, could easily argue with them

[Crampy]

hows a cop goning prove that its 2 loud anyway, unless ur cars like my mates old gtst that had factory turbo and stupid big gate it that could open up in neutral

they dont have to prove with the new laws. if they "deem it to be too loud" its green stickered and off you go for a 90 dollar wof buddy, plus fines. i speak from experience. they dont even have to measure it

yeh but if your main exhaust is quite ie no bigbore, could easily argue with them

You can argue with a cop til you're blue in the face. If they "deem it to be too loud", then's that's it end of story, green sticker. It's just another BS law that comes down to the person's interpretation. A cop will always win in that case.

[Py7h0n]

I have mine running right the way back as a seperate 55mm exhaust system. Previously to this it was plumbed back into my main 3.5" system.

It increased flow, increased power and still sounds REALLY cool. As for the legalities - If you drive past a cop with your wastegate open your probably going too fast anyways and your going to be done for something.

I've had mine like this for over 2 months now.

[Lith]

I've heard a car with the wastegate pipe plumbed all the way to the back around somewhere - I think it was the ex-WLDSTI show car come circuit car, and it sounded pretty cool.... no offensive screamer pipe noise but it still had a neat sounding edge to it.

There shouldn't be any problem as the wastegate will only open at heavy load, and the exhaust noise rules are for "normal driving" conditions. I prefer non-external noises a lot more myself still - a reasonable wastegate opening into the exhaust stream can still actually be heard and often can add a wicked edge to the exhaust note, much more my cup of tea.

[xsspeed]

Oh well looks like I got proved wrong, would have thought plumbing it back in would have generated less back pressure than an independant muffled system.

So I guess go for it if you are keen, would be keen to see pics when its done

[~SlideWays~]

Just my 10c.

I used to have boost cut issues in 1st and 2nd when running close to 18psi and having the external venting freely.

Now that it is plumbed into the downpipe I haven't had the issue anymore. Almost as if the exhaust flow is drawing the gas flow from the WG?

I would have thought it'd have the opposite effect. Oh well... it works

[avinesh]

yea im also worried about it causing spikes ooo well will hopefully get the car today an see if it spikes.........if it does then ill ask them to plumb it back in an see if that helps

[matt dunn]

Just my 10c.

I used to have boost cut issues in 1st and 2nd when running close to 18psi and having the external venting freely.

Now that it is plumbed into the downpipe I haven't had the issue anymore. Almost as if the exhaust flow is drawing the gas flow from the WG?

I would have thought it'd have the opposite effect. Oh well... it works

No, because you have plumbed it back in,
it is not drawing more through the wastegate,
it is restricting more through the turbo housing.