Roto fab whistle

impulse · 08-11-2020, 06:55 PM

I recently installed a roto fab on my ZL1 and it makes a sort of whistling noise on light throttle, is that normal or is there a leak? I’ve checked every connection and it’s very tight. Thanks for the responses, this is my first time with a CAI and a sports car.

CW3SF · 08-11-2020, 07:14 PM

Disregard. Thought you might be referring to the louder blower whine.

Flowtie1 · 08-11-2020, 07:30 PM

No whistle from mine

impulse · 08-11-2020, 07:49 PM

Idk how some people have it and some don’t. Mine must not be properly seated or something.

warren3537 · 08-11-2020, 08:23 PM

Mine doesn't have the whistle.

SFV1LE · 08-11-2020, 08:26 PM

I saw another post about this a while back (over 1 year), someone already identified the fix I think

impulse · 08-11-2020, 08:58 PM

Went outside with my headlamp 8mm socket and flathead. Loosened everything, gave it a jiggle and tightened the shit outta everything. No more whistle here folks. So for future reference if it makes that annoying ass sound it’s the fitment! Little disappointed though I thought the whine would be louder. Maybe my new pulley will make it louder.

Rnovrit · 08-11-2020, 09:20 PM

Not sure if it is the same but I had a big single blade throttle body on my 03 Cobra. It would whistle under light part throttle. Found out is was from the air crossing the blade at a certain air speed and blade angle.

impulse · 08-11-2020, 10:29 PM

That’s what I was thinking at first too. I’m sure it still has a bit of a whistle but I can’t hear it over the exhaust so I’m ok with it lol

SFV1LE · 08-12-2020, 10:26 AM

Quote:

Originally Posted by impulse

Went outside with my headlamp 8mm socket and flathead. Loosened everything, gave it a jiggle and tightened the shit outta everything. No more whistle here folks. So for future reference if it makes that annoying ass sound it’s the fitment! Little disappointed though I thought the whine would be louder. Maybe my new pulley will make it louder.

To really hear the increased sc whine drive with a wall on drivers side and punch it, like a freeway divider. It sounds great

nicktechla · 08-12-2020, 10:57 AM

Mine doesn't whistle

impulse · 08-12-2020, 11:01 AM

With the windows down you can really hear it suck air. Too bad that isn’t the sc whine. It’s pretty loud suck KEKW

nicktechla · 08-12-2020, 11:09 AM

Quote:

Originally Posted by impulse

With the windows down you can really hear it suck air. Too bad that isn’t the sc whine. It’s pretty loud suck KEKW

mine whines pretty good

https://www.instagram.com/p/B2NoZxul...d=7xyfczpqne63

impulse · 08-12-2020, 11:13 AM

Such a good sound clip mmmm, thanks for sharing! I was playing with the paddles and it did seem to be louder. Can’t wait to hear it on the track! I was just under the impression that it would sound like a hellcat, not sure why

08-11-2020, 06:55 PM	#1
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Roto fab whistle I recently installed a roto fab on my ZL1 and it makes a sort of whistling noise on light throttle, is that normal or is there a leak? I’ve checked every connection and it’s very tight. Thanks for the responses, this is my first time with a CAI and a sports car. __________________ Imagine impulsively buying a Summit ZL1.

08-11-2020, 07:14 PM	#2
CW3SF Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019 Location: Sea level Posts: 1,276 View My Garage	Disregard. Thought you might be referring to the louder blower whine. Last edited by CW3SF; 08-12-2020 at 12:17 PM.

08-11-2020, 07:30 PM	#3
Flowtie1 Drives: 2017 ZL1 Join Date: Apr 2020 Location: South florida Posts: 332	No whistle from mine __________________ 2017 ZL1 M6 Silver Ice Metallic

08-11-2020, 07:49 PM	#4
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Idk how some people have it and some don’t. Mine must not be properly seated or something. __________________ Imagine impulsively buying a Summit ZL1.

08-11-2020, 08:58 PM	#7
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Went outside with my headlamp 8mm socket and flathead. Loosened everything, gave it a jiggle and tightened the shit outta everything. No more whistle here folks. So for future reference if it makes that annoying ass sound it’s the fitment! Little disappointed though I thought the whine would be louder. Maybe my new pulley will make it louder. __________________ Imagine impulsively buying a Summit ZL1.

08-11-2020, 08:23 PM	#5
warren3537 Drives: 2019 Red Hot ZL1 1LE: 2012 RAM 2500 Join Date: Mar 2012 Location: DeRidder, LA Posts: 711	Mine doesn't have the whistle.

08-11-2020, 08:26 PM	#6
SFV1LE Drives: 2018 Hyper Blue ZL1 1LE Join Date: Dec 2018 Location: CA Posts: 1,365	I saw another post about this a while back (over 1 year), someone already identified the fix I think

08-11-2020, 09:20 PM	#8
Rnovrit Drives: 2018 NFG ZL1-1LE Join Date: Jun 2018 Location: Near the water Posts: 358	Not sure if it is the same but I had a big single blade throttle body on my 03 Cobra. It would whistle under light part throttle. Found out is was from the air crossing the blade at a certain air speed and blade angle.

08-11-2020, 10:29 PM	#9
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	That’s what I was thinking at first too. I’m sure it still has a bit of a whistle but I can’t hear it over the exhaust so I’m ok with it lol __________________ Imagine impulsively buying a Summit ZL1.

08-12-2020, 10:57 AM	#11
nicktechla Drives: 2012 Porsche 911 Turbo S Join Date: Jan 2017 Location: Los Angeles, CA Posts: 1,776	Mine doesn't whistle __________________ IG: 2fast2nick -- Current -- 2012 Porsche Turbo S - PDK - Basalt Black Metallic -- Past -- 2017 Camaro ZL1 Coupe - Red Hot - A10, PDR - HRE P101 2015 Mustang GT PP - Whipple Supercharger

08-12-2020, 11:01 AM	#12
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	With the windows down you can really hear it suck air. Too bad that isn’t the sc whine. It’s pretty loud suck KEKW __________________ Imagine impulsively buying a Summit ZL1.

08-12-2020, 11:13 AM	#14
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Such a good sound clip mmmm, thanks for sharing! I was playing with the paddles and it did seem to be louder. Can’t wait to hear it on the track! I was just under the impression that it would sound like a hellcat, not sure why __________________ Imagine impulsively buying a Summit ZL1.

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