Thinking about the above picture the choose off heading straight down on all four ITBs will be the outlet of your little hole just by the throttleplate (on my ITBs there isn't any vacuum there - i.e. useless) For an ECU that will only change the output as soon as https://toyota4ageblacktopenginef14677.angelinsblog.com/33763960/facts-about-blacktop-20v-4age-revealed