AFM measurement/backpressure (was Turbo speed sensor)

[clayb]

Espen Hilde wrote:

> What I tryed to say was that the AFM cant give info for the retard of
> ignition advance that the backpressure is indicating.
> AFM is not fast enough for a high rpm engine with big turbo, the engine can
> dubble the hp in 250rpm change.
> In a oem application ...no problem.

<good discussion snipped>

Your points serve to illustrate a less-than-well-known (?) fact that
sophisticated engine management contributes  more efficiency and HP to a turbo
motor, than to a NA motor.

- Clay (not that it isn't worthwhile on an NA motor...)

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