screamer pipe benefits?

[Songsay]

Terry, that is nice.
that is what i plan to do with mine over the winter.
I know dumping into the atmosphere gives me a false reading on my wideband downstream.

 

[Terry Posten]

No, BUT Chris Beran (boostinhard) ported the O2 part of the turbo (outlet side) and it still had the stock sized flapper. I did the housing. You really can't tell it but the outlet ID size where the dump mounted was about .500" larger Than stock.

 

[pmp285]

so preferably run stock or ported e3 o2 housing if youre running internal WG...

 

[cheekychimp]

Quoting Garfield Wright:
Boost comes on faster & you make more power.



Quoting BarnesMobile:
How would a dump pipe help spool? /ubbthreads/images/graemlins/confused.gif



I think Garfield is referring to boost lag between shifts or after letting off the throttle in a turn and then getting back on it (assuming that you are not using anti-lag). Whilst I appreciate that the advantages might be negligble (especially in view of all the extra noise) I was under the impression that an open dump allows the turbo to spin freely a little longer allowing faster boost response when you get back on the throttle.

 

[Barnes]

A dump pipe should have zero affect on spool or transient boost response. It will however help prevent boost creep, and help power output.

 

[cheekychimp]

Well if you say so; I don't really know enough to argue about it. I think the proper way to do it is have the dump feed back into the 'main' exhaust farther down. I've just heard it said many times that the stock O2 housings feeding back into the exhaust right after the turbine create a lot of turbulence there that does hinder transient boost response. It isn't something I am worried about on a small turbo like a 14B or 16G but I opted to go with the atmospheric dump on the bigger Holset. I'll see if the noise gets to me after a while and if so I'll have to weld on a short flex section and feed it back into the main exhaust further down.

 

[Barnes]

When you shift, your boost drops extremely fast which shuts the wastegate flapper. So during shifts, no exhaust gas is flowing out of the wastegate that could potentially interfere with the gas flowing out of the turbine exit.

 

[cheekychimp]

Yeah that makes sense actually!

 

[3rdstrikedsm]

Well I will give my ricer 02 on this subject and I have an open dump on my s6 and it really has no noticeable benefit other than when I am on antilag it now shoots flames from under the car as well as out of the exhaust /ubbthreads/images/graemlins/smile.gif

 

[Terry Posten]

This is what I run now with my PTE 6152R turbo. You can see more if you click on the link in my sig below.

 

[Boostdtalon]

^^^^ /ubbthreads/images/graemlins/dunno.gif no link? lol

 

[boostedinaz]

Only the first post in athread will have the person's sig. Check page one.

 

Quoting cheekychimp:
Well if you say so; I don't really know enough to argue about it. I think the proper way to do it is have the dump feed back into the 'main' exhaust farther down.




You can dump it on the ground or further in and have the same benefit. As long as there is enough distance that there is no turbulence then it doesn't matter if its routed back in or not.

As long as its not dumping right on the core support or too close to the radiator then try it out and see how you like it.

 

[Terry Posten]

Quoting boostedinaz:
Only the first post in athread will have the person's sig. Check page one.



Really? Never noticed that.

 

[Terry Posten]

Well, it is there now. Very strange...

 

[Whoodoo]

You probably unchecked the box before hitting reply

 

[Whoodoo]

Like this

 

[pmp285]

ill give the one that extends the o2 pipe down a shot.... makes more sense with that setup...