greddy kit = internal wastegate

 

atmospheric vent is only good for 5-10hp at most, the largest advantage (obviously) is that it regulates boost much better.

As far as boost creep is concerned, the LESS restriction in the exhaust pipe, the MORE you are going to creep. Air is very lazy, it'll try to go through the less restrictive path as much as possible. With as little backpressure as possible, the less restrictive path is through the turbine (thus boost creep) with more backpressure the wastegate hole becomes just as restrictive as the turbine outlet, thus it goes through both causing no boost creep.

 

Okay, where is a good place to start? I honestly have no idea where to start, for instance finding flanges and tubing.

Why doesn

 

well, as I am thinking about my Tune in Nov I more and more am leaning towards a super conservative tune with the Meth, I also wonder if it would benefit me to ask them to basically hack the DP so it vents into atmosphere, and maybe just weld up the hole (dont know if its possible) to better regulate boost, whoever I also wonder if I tune it for 12PSI and set the Boost controller to 10PSI, I cant imagine it would spike too much more then 12PSI, or Creep up to too much higher then 12PSI, I have the Berk HFC and would like to keep it on there, I know this is a ghetto way to fix it, but if I set my Boost controller to 12PSI I am sure it would spike to 14PSI, and thats a bomb waiting to explode.............

 

You will have to put a baffle between the turbine and the wastegate to cut of the smaller pipe and not have it leak horribly.

 

If you really wanted an atmospheric dump, the correct way to do it would be weld the flapper door closed on the internal wastegate and fab up a pipe to fit an external wastegate to the system and have that vent to atmosphere.

The way that you are describing will probably be a hack job and not help anything.

 

^ might consider limiting low rpm boost too, or you'll see perhaps too much tq. I'm sure that greddy turbo is a tiny little thing.

Spec ops might have more on that.

G

 

Well, the solution sounds easy then, up the boost.

I would still be instersted in a downpipe though.

 

now I have to worry about upping the boost which will creat too much torque down low which will destroy my bottom end , there is just no winning haha

 

Stock downpipe for the greddy kit is 2" off the turbo!
The damn dump tube for the wastegate is almost as big. LOL

Open dump will be too loud IMO.