Internal wastegate actuator question

[Filthy95talon]

I'm runnin a 20g with internal wastegate, and all I need to know is if the actuator runs off of vaccum or pressure... the reason I'm asking is because the factory turbo actuator runs off that vaccum switch under the intake (as u all know) which in turn runs off the intake... but I ran my 20g actuator to the same place and I don't think it's opening (i keep hitting 20 + psi which causes fuel cut) and the only thing I can think of is maybe it runs off pressure and that I need to tap the actuator into the intake manifold... someone let me know something please... also, where is a good place to get intercooler piping from (not a set... I just need two short pipes)

 

[Mr Peepers]

It runs off pressure. The stock BCS setup is a "bleeder" type and routes the (metered) bled air back in behind the MAS; it gets its pressure from the compressor cover on a t25 and the J-pipe on 1g setups.

You will need to use a pressure source as close to the compressor outlet as possible; whether an existing one or tap your own.

 

[Filthy95talon]

so tapping into the intake manifold is best then... right?
or you mean tap into the ic piping after the outlet?

 

[kawboy]

Either tap the J-pipe or lower intercooler pipe or put a nipple on the compressor housing.

Most compressor housings already have nipples.

 

[Filthy95talon]

I love this forum... and you guys are lots of help, and I'm sorry for asking such remedial questions... but wtf is a nipple?

 

[Mr Peepers]

IC piping after the outlet, or even on the compressor cover near the outlet.

Running off the intake manifold adds a lot of distance between the turbo outlet and WG, which does two things:
-Delays the response between boost and WG function, leading to boost spike.
-Any boost leaks between the turbo outlet and throttle body will be compensated for by the turbo, leading to unnecessary overspinning and no clues from the boost gauge. On a normal setup this will just be seen as a drop in boost.

I love this forum... and you guys are lots of help, and I'm sorry for asking such remedial questions... but wtf is a nipple?

After sifting through many google image results...

Barbed fitting is another name for it, it's pretty much anything you put a vacuum hose on.

 

[Filthy95talon]

IC piping after the outlet.

Running off the intake manifold adds a lot of distance between the turbo outlet and WG, which does two things:
-Delays the response between boost and WG function, leading to boost spike.
-Any boost leaks between the turbo outlet and throttle body will be compensated for by the turbo, leading to unnecessary overspinning and no clues from the boost gauge. On a normal setup this will just be seen as a drop in boost.

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[Filthy95talon]

After sifting through many google image results...

Barbed fitting is another name for it, it's pretty much anything you put a vacuum hose on.

google results for nipple? I bet those were some interesting results...