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BE5 D ECU RPM signal


GorGasmSpecB

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 Rosssub said:
Does the voltage change when you give it a rev?

Edit: it should show 0v with ignition on, engine off. Then 0-13v with engine on, depending on rpm.

When I blip the throttle I get between 6.95 and 7.05V with no apparent pattern. Everything I have found points to that wire being RPM and the IGN/GND pins were correct.

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 Rosssub said:
Something like this:

Rev_d_E_pinouts.png

yep, 7V flat :( Double triple uber checked I have that pin wired.

Even the service manual says pin 9 B136 and that it should be orange white, which is what I am connected to heh.

Edited by GorGasmSpecB
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Hmmmmm.... Same ECU/RPM pin for the MY01-03 WRX too.

Are you %100 sure your looking at the diagram the right way, is it showing ECU pins or loom plug ends? Can easily be read backwards.

Could pull the pin out and start it up, see if the tacho dies or any random CEL pops up?

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Fail. It's meant to be flat 7V and it was working all along lol.

I managed to switch the Gizzmo IBC-R to display current offset. The offset changes by the amounts I have set at specific RPM intervals so the IBC-R is reading the signal correctly.

Hurrah, RPM based boost control :D. Attempting to get 13 psi primary, 15 psi secondary or 14/16. Boost definitely hits faster with the EBC rather than a bleed valve.

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