The ECU controls boost via a solenoid valve (BCV) by PWM'ing it. I assume your ECU (DME) does the same.
The HFS-6 can cut this connection between the ECU and the BCV upon failsafe activation.. This is done via the yellow harness:
Cut and splice as following:
- White ........... ECU side
- Browen ......... BCV side
To avioid CEL (check engine lamp), read the second half of page 18. Referring to the Dummy resisrtor.
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Richard L
aquamist technical support
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