Hissing sound at high rpm's
 

so when i hit about 6900rpm to 7850rpm it makes a hissing sound. im thinking that its my belts but i could be wrong.It only does it a WOT around those rpm's

anyone know what this could be?

lil more info on wat car or motor is needed also plz. might be a blowoff valve. lol jk

if the noise comes from around the belt check for the idlers bearing. take the belt off and roll the idler youll hear it right away... other wise x2 need more info on your car

thaz vtech dood

its 95 integra ls b18b1. just an intake ,exhaust , and tune. 177k miles on it.

i was told it's prob the timing belt slipping?

hissing or whistling??

Sounds like your t-belt tensioner or idler pulley from what i heard in the car.

it sounds like a dry bearing @ high speed

No way the timing belt is slipping it would have jumped timing and you would be in some trouble

your intake ?

hmm. so i might wanna replace those soon?

you have an air leak, it could be your air compressor or govenor

x2... and yea bearings could be a prob on the tensioner or idler for the t belt ..
you could take the cover off, get one of those cheap mechanic stethoscope put the end on the bolt youll hear the bearing spin... its either going to be real smooth or crunchy as hell..if its a really loud noise sometimes without removing anything you can pin point where its coming from with the stethoscope...
and i would recommend finding the problem before replacing anything...
any updates? did you get a chance to check it out?

Check all vacuum lines on ur intake mani

Could also be the cat getting plugged. How many miles?

It idles fine right? Like, just making sure this aint some weird vacuum leak...That or your accessory belt is shredding? Just check the belts I guess, it would be safer to check/replace all of them rather then slip timing and watch your pistons and valves meet...Btw, pistons and valves hate each other lol

One ? Ru actually moving or just at idle when you hear noise or present,, pm asap would like to help out

yea it couldnt jump timing or else you could have messed up ur valves. so it could be vacum leak