how does that work if its inside the intake manifold only? different passage in the cylinder head? I've heard it was deleted on fbody/ vette also and I know the ls6 manifold doesn't have it as I just looked at 1 last week? whats the story?? the guy from PCMforless.com told me not to worry about it that he left his on his 03 ss silverado? now you guys are tellin me he doesn't have 1?? Somebody has bad info out here??