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?

 

What brand of headers and cat-back ?

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

 

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..

 

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

 

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

 

heat shield is gone ....

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

nah it isnt the intake

 

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

 

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

 

no a torque wrench

 

maybe a leak or a crank in a weld

 

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

 

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

 

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

 

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