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

[Adam Wade]

--- arnie <arnie_ at charter.net> wrote:

> to what extent does your actual experiences with
> turbocharging lie.

Unfortunately, I never got a chance to experiment with
a turbo vehicle with a four-gas on a dyno.  :( 
However, I have extensive repair experience with turbo
cars over the years, as well as pretty comprehensive
experience with EFI componentry, mapping, and exhaust
gas analysis WRT FI tuning and modification (in my
case, with motorcycles, not that it matters all that
much).

Ultimately, the principles of a turbo are pretty
simple, and when it comes to fueling and the behavior
of various sensors and what-not, all that really
matters is MAF, when comparing a turbo to a naturally
aspirated vehicle.  Obviously the behavior of a turbo
in terms of exhaust vs. intake pressures, snail size,
and impeller choice is a bit more complex, but there
are pretty well-established computations you can do to
determine their behavior pretty precisely.

To anyone who has not read it yet, although it is
extremely thick and technical, it has an AMAZING
amount of useful information for the purposes of these
discussions; 

"The Internal Combustion Engine in Theory and
Practice"

Here is volume 1:  Amazon.com doesn't seem to have
volume 2, which is probably more useful as it has more
practical apps and less theory.

http://www.amazon.com/exec/obidos/ASIN/0262700263/qid=1036179697/sr=2-2/ref=sr_2_2/102-8460290-5181706

=====
| 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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