Jeff, you are right that opening the waste gate further would be the best
option, but by this this point our scrawny little waste gates are already
all the way open.  There is not doubt that the HT-18 is not the best turbo
to use.  But for a price of "free," and additional work to install of "none"
I just couldn't resist.

Dave Leonard
>
>
> Pardon the abrupt de-lurking, but here's random thought for
> consideration in
> the current discussion on boost control.
>
> Would it be possible to have the bleed air from a BOV actuate a "manual
> override" of the wastegate, opening it up to alleviate the overboost
> condition from the exhaust gas side.
>
> Wouldn't this create a self-regulating feedback loop?  You could
> set the BOV
> for your maximum desired boost to protect the engine.  Since it
> doesn't just
> pop fully open but opens gradually against a spring, it would
> also begin to
> gradually override the wastegate setting to slow the turbine down, which
> should mitigate the issues Ed described as problems with a BOV.
>
> I certainly haven't thought this all the way through, and I'm not sure how
> to go about building such an actuator, but I'm interested in comments from
> the gallery.
>
> Jeff Andre
> Raleigh NC
>
>
>
>
>
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