i was oputting on my intake(AEM short on a (94 Civic DX motor) and i noticed a hissing sound coming from the throttle body (where the intake pipe attaches to). when i looked into it there
are 2 holes/ports inside the throttle body on the side away from
the engine, and the upper hole.port is causing this noise.
i know some intakes whistle while running but this is
not from the intake itself. does anyone know what
this hole is for and if it is a problem to have it making this noise. in the pic below its where the red circle is

thanks
Originally posted by inspyral

[QUOTE]Originally posted by inspyral