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      06-21-2022, 10:54 AM   #23
krudmunk
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Is the AC on when you hear this? What about when AC is off? Is sound still there?
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      06-21-2022, 12:23 PM   #24
Can335i
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Noise is always there. Its not the problem with the weight an AC Line, sadly.
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      06-21-2022, 12:25 PM   #25
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Quote:
Originally Posted by DrewDDS View Post
Got a response from Halim at ptf. He said afr goes lean and my stft was adding a lot of extra fueling at medium load. I ran some liqui molly jectron, and although it seems to idle much smoother on cold starts and pull smoother in general, the sound is still there. I will be using a stethoscope to track down the noisy injector and replacing it with a new bosch unit.
im excited for the result
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      06-22-2022, 04:36 PM   #26
DrewDDS
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Quote:
Originally Posted by krudmunk View Post
Is the AC on when you hear this? What about when AC is off? Is sound still there?
Same for me, I already added the additional weight. No difference unfortunately. I saw old posts about the a/c weight and thought that it was the same sound
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      06-22-2022, 04:37 PM   #27
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Quote:
Originally Posted by Can335i View Post
im excited for the result
Injector is on the way. Will update with results
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      06-30-2022, 05:30 PM   #28
DrewDDS
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So a little update. I tried for a couple of hours with the stethoscope and can't find one injector that sounds different from the others. It's extremely difficult to get the car to make the noise while stationary. I think I'm going to have to take it in. I'm going out of town this week, so it will be a little while before I update again.
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      07-17-2022, 03:25 PM   #29
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Maaybe this week my dealer has time to look, lets see
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      08-10-2022, 02:32 PM   #30
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Hey guys! Any updates on this issue? My car is making the same noise and it is driving me crazy. Otherwise it runs really fine and I can't notice any loss in power.
I will try and listen to each injector with a stethoscope tomorrow.
Would be great if you keep this topic updated, if you have any news. Much appreciated!

Last edited by ESPEX; 08-13-2022 at 03:54 PM..
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      08-13-2022, 01:03 PM   #31
ZachEvans93
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I have the same noise!!
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      08-13-2022, 09:15 PM   #32
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Check the exhaust valves
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      08-14-2022, 12:10 AM   #33
ZachEvans93
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Quote:
Originally Posted by Groganrocket View Post
Check the exhaust valves
Would that cause it to make that noise only under a load at medium acceleration? Seems to be coming from the front to mid of the car
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      08-16-2022, 01:14 PM   #34
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It's definitly not the exhaust valves. They open and close fine and seem sturdy. They don't have the spring that sometimes breaks on other models (correct me if I'm wrong).
I will keep you updated if anything comes up.
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      08-16-2022, 08:26 PM   #35
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Just wanted to update everyone, I replaced all 6 injectors and the sound remains. Oddly, after replacing them, no sound at all until the car warmed up. I’ve decided to not worry about it anymore and live with the car as there are no other symptoms whatsoever and my stfts look normal now. I’m thinking stft’s just got better after I reflashed my tune after the injector install.
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      08-29-2022, 11:29 PM   #36
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I also have this sound only when the car is cold! Did anyone figure out what the issue is ?
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