99+ VICS Question
How are the butterflies opened? Does vacuum keep them shut and then releasing it opens them? or does applying vacuum open them?
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You can play with the acuator, just reach in and move it. They're normally open, then they close at the stock RPM setpoint IIRC.
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with an RPM switch / shift light
/thread |
Originally Posted by hustler
(Post 271221)
with an RPM switch / shift light
/thread Anyways i figured out my issue....on my old escort i just ran a vac line to the actuator because the vacuum would hold them closed while cruising and as soon as boost came on they'd open. Worked well and i tried doing the same to the miata but it felt choked up all the time. I thought maybe on the miata they used vacuum to open them instead but then i realized the line i used ran straight to the vac reservoir so the vics was being held closed all the time.....oops. |
Low revs = no vacuum applied
High revs = vacuum applied via ecu controlled rpm switch. |
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