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Turbo Behavior on Outback XT?


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I know how a turbo works, but exactly when does boost occur in certain situations..

 

When does the turbo kick in after starting out from a stand still? Does it occur at a certain engine RPM or when the tranny is in a certain gear?

 

Let's say you are cruising at highway speeds, keeping a steady RPM. Is the turbo running at boost, or not?

 

If the turbo doesn't run at steady RPM's, would it kick on when you start climbing a hill to give extra power rather than downshifting an auto tranny?

 

I'm trying to see if there's a difference in power response between a 2.5 Turbo and a 3.0 H6.

 

RCoaster

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On my 91 Legacy Turbo the boost starts coming on at 2500 rpm when I'm accelerating and is usually going strong by 3000rpm. How much boost I get depends on close my petal is the floor :) When I'm driving at steady speed on the highway the boost generally doesn't occur no matter what my rpm is but as soon as I start to accelerate to say pass or climb a hill it immediently comes on strong, and the tranny will allow the turbo to increase the boost before it decides if it needs to downshift for more power.

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i've only done one drive in a Forester XT but i'm pretty darn sure that kicked in about 1200rpm.....that and they're suprising light weight is I think how they get such suprising 0-60 times.

 

That was months ago though....might be wishful thinking on my part

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i've only done one drive in a Forester XT but i'm pretty darn sure that kicked in about 1200rpm.....that and they're suprising light weight is I think how they get such suprising 0-60 times.

 

That was months ago though....might be wishful thinking on my part

If they have no cat in the uppipe that is a definite possibility.

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