Turbo speed sensor ever used ?

[Greg Hermann]

>HI chaps,
>
>Wonder if anyone has considered using a turbo speed sensor in any capacity
>to augment EFI controller inputs ?
>
>I can understand it might be more efficient to have a separate boost
>controller - I'm interested if anyone has already made any optical tacho
>setup on the inlet ie. reflect infra red of blades, count pulses, apply
>formula to output shaft speed as data log qty or suitable for display etc ?
>
>Rgds
>
>:) mike
>

Yes, it's been done. Mostly appropriate when pushing a turbo to the ragged
limits of compression pressure ratio.

Greg


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