external wastegate

[l3igl3ang]

Hi i was thinking of getting a external wastegate for my 2g and i was wondering what all do i have to do? and is it something ez to do for newbes like me or something for the extremeist?

i got a 2g eclipse AWD with 50trim tubro unsure what turbo it is i think a t3-t4

 

[MLutin]

Well, it depends on if your set up to push lots-o-boost (forged internals and such) or if you want to stick to where you are. People go to external wastegates because they hold a lot more boost. You need the wastegate (expensive), and a place to mount it (not as expensive). I've seen them mostly on the manifold, but I've seen them on the O2 dump too.

 

[MLutin]

your running 950's with a 190 Walbro and it doesn't say if you have a WBO2 or any type of Air Fuel Controller, tell me this is wrong.

 

[Project2G]

There are two types of wastegates. The first one is an internal wastegate. An internal wastegate is a component on the turbo unit itself. The gate is opened via an actuator which is a diaphram type system. Excess exhaust is then fed directly into the exhaust system. The other is called an external wastegate, unlike an internal wastegate, it is seperate from the turbo unit and does not require an actuator. Excess exhaust can either be fed into the exhaust system or it can be vented straight out and into the atmosphere. High performance set-ups typically follow the latter alternative. Most stock systems come with an internal wastegate as this set-up is better suited for low boost applications. However most aftermarket systems perform better with an seperate external wastegate assembly making it an ideal choice for those generating boost in the range of 20-30 PSI.

Also here is a link for wikipedia which may help you understamd what is needed for an external wastegate.
Wastegate - Wikipedia, the free encyclopedia