Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2008 Honda Civic Si › 2008 Honda Civic Si March 21, 2012 at 11:00 am #439590 MattParticipant I’m actually starting to wonder if that car is a drive-by-wire system that doesn’t use an IACV, but instead feathers the throttle plate to allow air in… You’ll have to get with Eric on this one, because I can’t find anything for ya. Sorry man.