sometimes most of those "O" gaskets are crap. You might be one of the lucky ones that got it.

Might be where the second piece is bolted to your Cat. (or test pipe).


I have a ebay header on. I have took it of twice already and my Gaskets are still good.

 

I had it at first, when I installed. Like a slight whistle could be felt at 2K RPM. I thought maybe the gasket is slightly protruding around the exhaust pipe and whistles when the air flows. But now maybe I have gotten used to it

 

Yeah that's kinda what I got except it is ridiculously loud and I don't feel it at all, just hear it. I think I will try to grab the header just at start up so it's still cold and see if I can stop the noise just by holding it.

^^^I know what you mean CM but my exhaust after the header will only fit with a donut just because of how the flange is designed.

Hey Pata my donut that came with the header is crap so I think I will go but a proper one and install that and see if that makes a difference.

 

mine fit better without the donut

 

Hahah hold it? Well, it gets pretty hawwtt in few secs btw

But anyway I don't think you would have to worry much unless it leaks exhaust gases or something. Lol tel your peeps you got a sequential bov

 

it could be a really small exhaust rattle. they can sometimes sound like a leak or high pitched noise. My Del Sol i had did this and i fixed it by installing a flex pipe and buying some better rubber hangers for my exhaust.

But this worked in my case. I dont know what urs sounds like

 

Posting a video might help

also maybe try switchin gaskets back to the oem one? That's what im runnin right now...I have an ebay header and i gotta say in around the 2k rpm range it starts bangin like I meen you can hear the pinging from the exhaust i think its just the cheap-ass "stainless" they use

 

OK so I fixed the annoying whistle. I took off the O gasket and slathered it in anti-seize compound. So far so good. I must have had a tiny leak before that made that sound at that rpm. We will see how long the anti-seize works for the problem. Thanks for all the help guys.