Faint buzz or vibration when acelerating.

[Fountainhead]

around 4000 rpm and above I hear what sounds like an exhaust shield rattle under my left foot area. Sounds like a resonance at that particular exhaust note. Haven't bothered to see what it is. Otherwise no noises I can't account for.

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[Zeffy94]

around 4000 rpm and above I hear what sounds like an exhaust shield rattle under my left foot area. Sounds like a resonance at that particular exhaust note. Haven't bothered to see what it is. Otherwise no noises I can't account for.

Stock or aftermarket exhaust?

 

[Fountainhead]

Stock or aftermarket exhaust?

All stock stem to stern

 

[aldksgo]

I can hear mine at very very low RPMs. Will try to take a video shortly..

 

[Joerodd]

Active Sound Control is something that the CTR owners here, including myself, don't have, so it can't be that. I agree with it coming on around 3K RPM though. That's when I start to hear it.

I just realized this was on the type r forum, so dont mind my Si comments lol. Yea that active sound control is a little annoying. Not as bad as I expected, but noticable.

 

[Cranium]

I just noticed this over the past week as well. Same sound and is driving my crazy. I'm almost positive it's this part 36300-RPY-G013-M3 (Vacuum Pump Assembly). I was able to feel the buzz with my hand (while it was parked) against the surface plate. I just bought mine back in Mid March and have about 525 miles on it so far.

 

[aldksgo]

I just noticed this over the past week as well. Same sound and is driving my crazy. I'm almost positive it's this part 36300-RPY-G013-M3 (Vacuum Pump Assembly). I was able to feel the buzz with my hand (while it was parked) against the surface plate. I just bought mine back in Mid March and have about 525 miles on it so far.

Did you have to do any adjustments? Or not possible and the sound is still there?

 

[Cranium]

Did you have to do any adjustments? Or not possible and the sound is still there?

No, but I’m the type of person dying to know what’s going on inside of there. I’ll be taking it to the dealer.

 

[aldksgo]

No, but I’m the type of person dying to know what’s going on inside of there. I’ll be taking it to the dealer.

Please let me know what you hear from them. I thought it was maybe because of my intercooler install, or when I brought it to the dealer to adjust my CMC because of the clutch vibrate/buzzing noises but it's entirely possible it was always there, I just never paid attention until it got warm enough to drive with windows down.

 

[Comma Chameleon]

Please let me know what you hear from them. I thought it was maybe because of my intercooler install, or when I brought it to the dealer to adjust my CMC because of the clutch vibrate/buzzing noises but it's entirely possible it was always there, I just never paid attention until it got warm enough to drive with windows down.

I believe this sound comes from the gear driven high pressure fuel pump which is very close to the vacuum pump, I only really noticed the noise after my mishimoto intake install but like everyone else it may have been present all along.

 

[aldksgo]

Just tried to take a video but the sound never got picked up I'll have to try again maybe when it's more quiet outside etc. Notice it very easily at low RPM like 2-3k.

 

[whytfwontthiswork]

I bought a used 2018 2 weeks ago. Has a faint buzzing somewhere middle left. Im sure its the same noise all of you are hearing aswell. Ive brought my car to 2 different dealerships. 1st one had their master tech come out and check the car with me (i held the revs in neutral) he said hes pretty sure its the high pressure fuel pump and believes its normal.

Second dealership the advisor wanted to confirm the noise before opening a work order. He acknowledged the noise but believed it was normal. We road tested another 2018 they had on their lot for sale and it made the exact same noise. I wouldn't stress too much over it. Its annoying but its "normal"

Edit - car is 100% stock

 

[Cranium]

I bought a used 2018 2 weeks ago. Has a faint buzzing somewhere middle left. Im sure its the same noise all of you are hearing aswell. Ive brought my car to 2 different dealerships. 1st one had their master tech come out and check the car with me (i held the revs in neutral) he said hes pretty sure its the high pressure fuel pump and believes its normal.

Second dealership the advisor wanted to confirm the noise before opening a work order. He acknowledged the noise but believed it was normal. We road tested another 2018 they had on their lot for sale and it made the exact same noise. I wouldn't stress too much over it. Its annoying but its "normal"

Edit - car is 100% stock

Thanks for the information! Yes, this is annoying, but good to know!

 

[Emertxe]

Did you ever get that fixed? The exact same buzz appeared in my CTR this morning, only have 450 miles on it. Don't know if I should try taking it to the dealer or just live with it.

 

[CTRismybeater]

This is an artifact of the performance vs price point if these cars. Get used to it and expect more regardless of mods.

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