Turbo speed sensor ever used ?

[Mike (Perth, WA)]

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

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