for my K&N filter both on cold air and hybrid setup, it makes that "hissing" sound between 2,000rpm-2,600rpm. not too long ago i cleaned my K&N filter with the recharger kit. yet it still making the same sound. the K&N filter is in nearly perfect condition, no scratch or whatsoever. but it's hella annoying. right now i have it on hybrid setup. anybody encoutered similiar problem?

for stillen and JWT filter users, do you guys get some "hissing" sound as well?

 

There is a hiss noise on CAI's for sure but i dont think that is what youre using. Sounds like there could be a leak somewhere by the filter or along those lines.

BTW, if youre using a K&N or something along those lines, you should consider cleaning the throttle body. I just took apart my intake and cleaned all the black soot off. it was amazing how much had accumulated and possibly went into the engine

 

yea i did clean the throttle as well not too long ago. i'm pretty sure when i swap from cold air to hybrid, there wasn't any leakage. is it my filter? i don't know whats up...

 

the hiss is normal, there was a conversation awile back about this and everyone with a aftermarket intake has it. If you dont like it, put the stock intake resonator back in and the hiss goes away.

 

Normal.......

 

my injen makes more of a whistle rather than a hiss...but I like it

 

my intake makes this weird whistling/crickety type noise...i guess its normal.

seriously though...the squeeky/whistling/hissing noise is normal for the intake. just have to live with it.

--Paul