[Diy_efi] DIY Electronic Boost Controller

Barry sy2th at direcway.com
Thu Apr 3 13:47:24 GMT 2003


I'm all ears here, Shannen - what do you have in mind?  I've become a bit 
of a nut on a smooth boost curve on the Sy, tried *many* different combos 
of WG, actuators, solenoids, external/internal, etc this past 
winter.  Latest iteration is a butterfly style 1 1/2" WG spigoted into the 
Mitsu turbine housing - should be up & running this weekend.  Backpressure 
is such a big problem w/ the flapper & poppet types, thought I'd give a 
pressure balanced unit a try.

Lotsa variables at work here, thought I'd keep the ECM out of things at 
first & just use the Deltagate actuator on the butterfly & see how it works.

Barry - Syclone #26
Bangor, MI

At 11:36 PM 4/2/03 -0500, you wrote:
>Or that the bloomin' boost control algorithm is "static" and doesn't
>apply well to the the way the engine is running in the current
>configuration.
>
>There _is_ a better way.
>
>Shannen
>
>
>
>Barry wrote:
> >
> > Boost creep (& spikes) generally mean that the wastegate is physically not
> > able to handle (dump) enough exhaust flow to maintain steady boost
> > pressure.  Its usually a "its not big enough" problem rather than a control
> > problem.
> >
> > FWIW, YMMV, etc.
> >
> > Barry
> >
>
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