Hello, Just installed quad throttles on my b18c5 and its idling at 5000rpms as soon as I turn it on. What could cause this? to much fuel?? vac leak? I have the butterflys closed as much as possible(toyota itbs)
any ideas what could cause this? using a hondata s300 tune as a base that was running fine with these itbs on a b18c with slightly high compression.

So any ideas guys? Thanks