Roto fab whistle - Page 2

nicktechla · 08-12-2020, 11:13 AM

Quote:

Originally Posted by impulse

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

On the track my dad says he can recognize the sound of my car from the whine if he's not watching.

impulse · 08-12-2020, 11:18 AM

I was actually surprised how loud that whine was. Whoever was filming looked to be a good distance away.

CW3SF · 08-12-2020, 12:16 PM

Quote:

Originally Posted by nicktechla

mine whines pretty good

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

Do you still have the OEM smashed pipe sections? I replaced mine with AWE mid pipes and my blower whine almost completely went away. Very disappointing.

nicktechla · 08-12-2020, 12:17 PM

Quote:

Originally Posted by CW3SF

Do you still have the OEM smashed pipe sections? I replaced mine with AWE mid pipes and my blower whine almost completely went away. Very disappointing.

Yeah mine is all stock except for the RotoFab. I'm going to do the Corsa Mid Pipe and Corsa NPP exhaust soon though.

CW3SF · 08-12-2020, 12:18 PM

Quote:

Originally Posted by nicktechla

Yeah mine is all stock except for the RotoFab. I'm going to do the Corsa Mid Pipe and Corsa NPP exhaust soon though.

I’d be interested to hear if you blower whine changes like mine did when you swap out the mids.

nicktechla · 08-12-2020, 12:18 PM

Quote:

Originally Posted by CW3SF

I’d be interested to hear if you blower whine changes like mine did when you swap out the mids.

I'll get some fresh videos when I do.

CW3SF · 08-12-2020, 12:20 PM

Quote:

Originally Posted by nicktechla

I'll get some fresh videos when I do.

Thanks

19Nasty1le · 08-12-2020, 01:07 PM

I have the whistle too with Corsa Extreme+ Catback also.

ZED SLED · 08-12-2020, 02:27 PM

I questioned Rotofab about this after I installed mine and was told they are aware of the issue on some cars but don't have an answer to it. Someone back then said Rotofab made a change to the hood seal gasket in 2018 but Rotofab said that's not the case.

impulse · 08-12-2020, 02:31 PM

Yea upon driving today with my windows down you can hear the intake sucking air but it’s a whistle at first, which I guess is the throttle body opening slightly as another member stated above. I thought I had gotten rid of it but I was mistaken. On a positive note though I drove past a line of traffic today and the supercharger echoed off the surrounding vehicles and it was super loud wow. I’d love to have it heard as an outsider looking in haha.

ZED SLED · 08-12-2020, 02:38 PM

Go to just around the 3:55 minute mark in this vid. The black ZL1 behind the ABM SS is mine and you can hear a fairly pronounced whistle. It's not that prominent inside the cockpit.

nicktechla · 08-12-2020, 02:56 PM

Quote:

Originally Posted by ZED SLED

I questioned Rotofab about this after I installed mine and was told they are aware of the issue on some cars but don't have an answer to it. Someone back then said Rotofab made a change to the hood seal gasket in 2018 but Rotofab said that's not the case.

I don't think that piece of rubber trim would really change the sound much anyways, its just trying to block hot air from the air box area.

impulse · 08-12-2020, 03:19 PM

Yea that whistle sounds like a jet about to take off or something haha

soceur77 · 08-12-2020, 03:41 PM

i have the whistle too, and was told its normal...its actually annoying to me that I hear that over my s/c.

08-12-2020, 11:18 AM	#16
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	I was actually surprised how loud that whine was. Whoever was filming looked to be a good distance away. __________________ Imagine impulsively buying a Summit ZL1.

08-12-2020, 01:07 PM	#22
19Nasty1le Craig Drives: 2019 ZL1 1LE Join Date: Jan 2019 Location: Peterborough, ON Canada Posts: 443	I have the whistle too with Corsa Extreme+ Catback also. __________________

08-12-2020, 02:27 PM	#23
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,622 View My Garage	I questioned Rotofab about this after I installed mine and was told they are aware of the issue on some cars but don't have an answer to it. Someone back then said Rotofab made a change to the hood seal gasket in 2018 but Rotofab said that's not the case. __________________

08-12-2020, 02:31 PM	#24
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Yea upon driving today with my windows down you can hear the intake sucking air but it’s a whistle at first, which I guess is the throttle body opening slightly as another member stated above. I thought I had gotten rid of it but I was mistaken. On a positive note though I drove past a line of traffic today and the supercharger echoed off the surrounding vehicles and it was super loud wow. I’d love to have it heard as an outsider looking in haha. __________________ Imagine impulsively buying a Summit ZL1.

08-12-2020, 02:38 PM	#25
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,622 View My Garage	Go to just around the 3:55 minute mark in this vid. The black ZL1 behind the ABM SS is mine and you can hear a fairly pronounced whistle. It's not that prominent inside the cockpit. __________________

08-12-2020, 03:19 PM	#27
impulse Drives: Big Dually ... RIP ZL1 Join Date: May 2020 Location: Nearest (diesel) station Posts: 218	Yea that whistle sounds like a jet about to take off or something haha __________________ Imagine impulsively buying a Summit ZL1.

08-12-2020, 03:41 PM	#28
soceur77 Drives: 17 NFG ZL1 17 GTR 22 RS6 Join Date: Apr 2017 Location: Upper Marlboro MD Posts: 625	i have the whistle too, and was told its normal...its actually annoying to me that I hear that over my s/c.

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