[Diy_efi] Re: Question about speed density, etc.

[Adam Wade]

--- truE <thekid at FoxValley.net> wrote:

> I've also wondered the same thing. I've got my MAP
> source for my boost controller on the Surge tank
> (after throttle plate).  When running 10psi I want
> 10psi to be IN the intake manifold before the
> wastegate opens. I can build full boost at partial
> throttle...and wondered if 100% at this point will
> do anything at all.

It won't do a thing with regard to what the engine
will do.  You'll get the same amount of air into the
engine either way.

What it MAY do is change the amount of drag on the
turbo's impeller (depending on whether the restriction
of the throttle plate produces more drag on the
impeller than working against the pressure in the
intake manifold, or not), changing the speed at which
the turbo turns.  As long as your turbo can handle the
extra revs from a full throttle plate, there won't be
much change except the amount that the wastegate is
open will increase, possibly making the car noisier. 
;)


=====
| 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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