Checking out the above mentioned photo the acquire off going straight down on all four ITBs would be the outlet of the small gap just from the throttleplate (on my ITBs there's no vacuum there - i.e. worthless) Thats a good suggestion but I would want to modify my aurbox https://andrexyzuu.thenerdsblog.com/40444797/little-known-facts-about-4age-engine-for-sale