[Diy_efi] New to list, have a question about speed density and turbos

[Dan D'Andrea]

Perhaps you have a bad TPS?  Wouldn't be the first time I've heard of that 
happening.

Dan D'Andrea

From: Adam Wade <espresso_doppio at yahoo.com>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: [Diy_efi] New to list, have a question about speed density and 
>turbos
>Date: Wed, 23 Oct 2002 11:51:31 -0700 (PDT)
>
>--- Startled Jackrabbit <bluefire211 at yahoo.com> wrote:
>
> > My car can reach full boost before I am at full
> > throttle, IE, I might reach it at 80% throttle.  The
> > ECU will think that this is the maximum airflow,
> > although I know much more will enter the engine at
> > 100% but the pressure will not increase, thus I will
> > lean out.
>
>I'm more than a little confused.  If the pressure
>remains the same, then the same amount of air will be
>entering the engine each intake cycle, throttle
>position notwithstanding.
>
>Why would it lean out if the intake manifold pressure
>is not changing?  And if the pressure is not changing,
>how can the rate of acceleration change?  The way you
>describe it, that last 20% of pedal travel makes no
>difference whatsoever in how the car runs.
>
>=====
>| Adam Wade                       1990 Kwak Zephyr 550 (Daphne) |
>|   http://y42.photos.yahoo.com/bc/espresso_doppio/lst?.dir=/   |
>| "It was like an emergency ward after a great catastrophe; it  |
>|   didn't matter what race or class the victims belonged to.   |
>|  They were all given the same miracle drug, which was coffee. |
>|   The catastrophe in this case, of course, was that the sun   |
>|     had come up again."                    -Kurt Vonnegut     |
>
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