Post by
ddiamondd »
https://forums.nicoclub.com/ddiamondd-u138064.html
Mon Aug 24, 2009 4:34 am
I guess its kinda like a metallic hissing sound........that about as good as i can describe it. Like i said i have a cone filter in place of the stock filter, maybe this noise is just the filter and i havent had the engine running and the hood open since i installed it. I can only hear it when the car is idling. Once i rev it the sound is gone or drowned out by the engine noise. The car is running normal and i could just be worried about nothing i hope