Winding/Whistling Noise when accelerating in 2nd/3rd 4000+

Braiton

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Hey guys.
I have a 2019 Civic Si sedan with 5800 miles on It.

Mods on it:
Prl Cobra Intake (street maf)
Prl catted v2 dp and fp
MAPerformance race exhaust
Ktuner with TSP stage 1 tune at 24.5psi.

The issue (or concern) I’m having is that when I’m accelerating into high rpms 4000-6500 my engine or something up there is making a whilsting, winding noise.

The car did not originally have this noise even 500 miles ago with all of these mods.

Is It the turbo? Is It the street maf? Any other ideas? Thank you
Sponsored

 
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Braiton

Braiton

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Help?
 

raulnor516

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I'm no expert, but my guess would be you're hearing the real noise from your various mods. I've seen a lot of people mention that bolt-ons have a break in period for settling/sealing/whatever, and the noise changes after a few hundred miles post install.
 

mauiSI19

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a video of the noise would be helpful
 
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Braiton

Braiton

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Tried to record a video but It didn’t pick up the noise in question
 


Maroco

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Its either air going in or air going out making the noise. Id suggest leak testing your system with a fogger or something. Also the exhaust... Id check for leaks there
 
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Braiton

Braiton

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Can I do this fogger solo or are their shops for that
 

Maroco

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You can do it yourself if you wanna spend 120$ for the tool. Its not hard at all. Shops can and will do it for ya. If you are interested heres a video explaining how. Guys kinda cringy but the info is good
 
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Braiton

Braiton

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Hahaha this guy. START YOUR ENGINEEEEESSSS LMAO.

This is the vid I tried to get the noise but nope. Sounds purdy tho

 
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Braiton

Braiton

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You can actually hear It. Towards the top of the gears listen for that metallic air noise
 


Maroco

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Hmm im not hearing anything i wouldn't expect from a car with your mod list
 
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Braiton

Braiton

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Right after the first shift, listen after like 2 seconds
 

Maroco

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Are you talking about the noise that sounds like a sneeze?
 

Maroco

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If you arent i may have to wait until i get some headphone. Im on my mobile atm
 


 


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