Strange sound from exhaust

[Hoonafist]

Hello and thank you for the responses in advanced. I just picked up a new to me shop exhaust, and after install I went for a test drive as you do. When I accelerate after about 3800 rpms there is a loud almost super charger whine sound that starts. It goes away when I shift and doesn't start till that same rpm range. Wondering if anyone has any ideas. I have videos but it won't let me attach them

 

[Jabbit]

Upload the video to YouTube. Is it possible you are just hearing your turbo now?

 

[Hoonafist]

Upload the video to YouTube. Is it possible you are just hearing your turbo now?

https://youtube.com/shorts/yqr6NRnJWWg?feature=share that's the link.
Its definitely not the turbo

 

[Stgtr]

Definitely not turbo noise. May be an exhaust leak where it isn’t fitted correctly? In the video it seems to be happening only in boost.

 

[Hoonafist]

Definitely not turbo noise. May be an exhaust leak where it isn’t fitted correctly? In the video it seems to be happening only in boost.

Yeah I have off the next 2 days so I'm going to put it on the lift and check for a pin sized hole right right after the downpipe. Also check to see if I tightened everything down. It's weird tho for an exhaust leak because the exhaust isn't louder in the traditional sense of having a hole In your exhaust 🤷

 

[rcnut14]

did you check the intake? they might've loosened the intake and forgotten to tighten it.

 

[XR650R]

did you check the intake? they might've loosened the intake and forgotten to tighten it.

Yeah, sounds like an intake leak from what I can tell. Just go over everything.

 

[LilPartyBox]

Did you use exhaust assembly paste?

 

[Hoonafist]

Okay so I'll upload a picture when I get home but it was the gasket between the downpipe and exhaust. Also, I built my intake so ik it's not leaking there 😂 ( random leaks starts)

 

[Hoonafist]

That'll definitely cause a leak 😂😂

 

[XR650R]

Glad you found the culprit. I'm waiting on a new catback, and I already got a new gasket for when it goes on.

 

[the duke]

Exhaust go BRRRRR

 

[rcnut14]

That'll definitely cause a leak 😂😂

when you replace it, get one of the crush gaskets. They seem to hold up better.