split second aic question

Chris1337 · 12-31-2019, 06:49 PM

does the split second aic1 or port injectors make a high pitch noise when activated? hearing a high pitch noise when on harder throttle

BOOSTLEE · 01-01-2020, 08:35 AM

Quote:

Originally Posted by Chris1337

does the split second aic1 or port injectors make a high pitch noise when activated? hearing a high pitch noise when on harder throttle

PI will not make that sound, check your PVC valve https://www.e90post.com/forums/showthread.php?t=1197666

my car made the same noise at full throttle/high boost and I also have PI. I'd replaced the PVC, actually replaced the whole valve cover and gasket for preventive maintenance, noise is gone now.

Chris1337 · 01-01-2020, 01:03 PM

Quote:

Originally Posted by BOOSTLEE

Quote:

Originally Posted by Chris1337

does the split second aic1 or port injectors make a high pitch noise when activated? hearing a high pitch noise when on harder throttle

PI will not make that sound, check your PVC valve https://www.e90post.com/forums/showthread.php?t=1197666

my car made the same noise at full throttle/high boost and I also have PI. I'd replaced the PVC, actually replaced the whole valve cover and gasket for preventive maintenance, noise is gone now.

just replace valve cover and gasket

TheGoodTheBadTheUgly · 01-01-2020, 06:58 PM

What does the noise sound like. On stage 2+ I also had a high pitch noise that kind of sounds like a super charger. I am considering gear whine probably.

Chris1337 · 01-02-2020, 08:52 AM

Quote:

Originally Posted by TheGoodTheBadTheUgly

What does the noise sound like. On stage 2+ I also had a high pitch noise that kind of sounds like a super charger. I am considering gear whine probably.

yeah that actually sounds accurate

TheGoodTheBadTheUgly · 01-02-2020, 02:32 PM

Quote:

Originally Posted by Chris1337

yeah that actually sounds accurate

Hmmm alright, another thing is if you have an invasive aftermarket catchcan installed like the VTT one for N54. I know if one of the fittings is not tight enough or leaking it might do a high pitch sound under load but it's more like a screech apparently.

Chris1337 · 01-04-2020, 04:01 PM

Quote:

Originally Posted by TheGoodTheBadTheUgly

Quote:

Originally Posted by Chris1337

yeah that actually sounds accurate

Hmmm alright, another thing is if you have an invasive aftermarket catchcan installed like the VTT one for N54. I know if one of the fittings is not tight enough or leaking it might do a high pitch sound under load but it's more like a screech apparently.

I do have a catch can from bms, I'll check them now. thanks!!

12-31-2019, 06:49 PM	#1
Chris1337 First Lieutenant 27 Rep 290 Posts Drives: 2012 e92 335i Join Date: Apr 2017 Location: Miami, FL iTrader: (0)	split second aic question does the split second aic1 or port injectors make a high pitch noise when activated? hearing a high pitch noise when on harder throttle
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01-01-2020, 06:58 PM	#4
TheGoodTheBadTheUgly Captain 257 Rep 674 Posts Drives: 2011 E90 335i xDrive Join Date: Feb 2018 Location: Gatineau iTrader: (0)	What does the noise sound like. On stage 2+ I also had a high pitch noise that kind of sounds like a super charger. I am considering gear whine probably. __________________ TOTALED \| 2011 E90 335i xDrive - BMS Cold Air Intake - ETS Charge Pipe - ETS 7" FMIC - MHD Stage 2+ - GFB DV+ - PE Mod - VRSF Catless Downpipe - xDelete - xHP Stage 3 2015 E84 X1 35i M-Sport
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