There should be a lil cylinder right underneath the throttle body. There are threads on how to clean it out,etc... Im not running my gsr TB, Im using my Ls TB on my Sk2 gen 1 manni. The Ls TB doesnt use a FITV, like the aftermarket TB dont either. I run a GSR and never really look into the ins/outs of a B16a...so im not even sure if the B16a has a FITV. Many tweek the IAVC/FITV when the idle is acting up.