[Diy_efi] turbo "throttling"

[Dan D'Andrea]

Erik,

My thoughts were to use a divided turbine housing and build a throttle body 
that could be used to route the exhaust gases to A) one side of the housing 
or B) both.  This should give you two AR's and thus allow a big turbo to be 
spooled up quickly.

Does anyone see a flaw in this idea?

--Dan D'Andrea

>so did we ever come to a verdict on this?

>I was wondering... is there some way that you could divert exhaust
>and intake flow around a really huge turbo?  I'm kinda thinking
>of a system where the big turbo gets a little bit of exhaust gas
>to start it moving at lower RPMs (where miserable lag would be a
>problem), and then as RPMs increase more exhaust gas is
>diverted towards the turbo because the energy is higher so it will
>have less trouble spooling it)... but also keep the intake tract
>free from having to "suck" through the turbo by offering a
>diverted intake path as well... does this make any sense?  Where
>am I going wrong with my thought train here?
>     -Erik


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