BC2G

i'm hearing a whistling noise from my headers @ higher rpms and in colder weather also hearing kind of a ratling from the cat but its real subtle so i'm not sure if i'm just being paranoid or if its comin from somewhere else?

all the pros? any ideas?

Jonesi

What brand of headers and cat-back ?

Did you buy new gaskets when you had the headers installed?

BC2G

no cat-back, stock exhaust...

the headers are alpha werks .. i used the gaskets they sent w/ the headers... except for the o-ring between the midpipe and the cat i had to buy another gasket cuz the one they sent didnt fit, and that took a little bit of custom work to get to fit..

Jonesi

You sure it isn't your intake ? Higher RPM = VTEC = Louder noise

Chief F1 Fan

rattling=heat shield problems??? Not sure, either that or whoever installed your headers didn't tighten the header bolts enough.

BC2G

heat shield is gone ....

loose bolts is a good thought i should have them tightened.

nah it isnt the intake

Jonesi

Whistling could be a exhaust leak.. First step tighten the bolts..

BC2G

i need a power tool to tighten it properly though correct?

evilone

no a torque wrench

darrinb

maybe a leak or a crank in a weld

BC2G

ok well i torqued it myself when we installed the headers... maybe they need to be re-tightened

Jonesi

I was thinking that also... Didn't want to scare him..

Titand19

it's a leak, tighten the bolts if there is no crack.

rezurex

hope there's no crack brian... hope u get it resolved soon