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MR2 tacho drive

justin sue

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I currently have aux output 5 on my xtreme g4 hooked up to the tacho input, but it doesnt drive the MR2 tacho. what do i need to change on the MR2 tacho board to get it to accept the low level signal coming out of the link ecu since from what i understand the MR2 has a high level drive coming from the ignitor.

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Hi Justin,

Without scoping what the original signal looked like on the other side of that resistor it would be hard to know what duty cycle or resistor it would need. I would think it would be fine without the extra resistor. I would also imagine that 30-50% duty cycle should be fine.


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