Issues with Roto-Fab CAI - 2018 ZL1 A10

stmeria · 08-30-2018, 12:23 PM

Just installed RotoFab Cold Air Intake with dry Filter, the installation was easy with no problems, However there is a high pitch sound when I am driving, its overpowering the Blower whine, its hard to explain, when the car is in park and I Rev it I don't hear it. Any help is appreciated.

Jimabe · 08-30-2018, 12:31 PM

Is it constant? I have same. Rotofab on '18 Z.
The pitch on mine changes with throttle blade position. When cracks open, it's high pitch for an instant then goes to a "woosh" of the rushing air through the system. I have put other CAI's on my other vehicles (trucks, cars) and have experienced a similar experience. Some guys call it an exhaust for your intake. The K/N on my Tundra is loud as hell. Some guys don't mind it, some do.

I will say after i went to a Tony M TB and headers, can't hear it as much anymore...

collinms · 08-30-2018, 12:34 PM

Quote:

Originally Posted by stmeria

Just installed RotoFab Cold Air Intake with dry Filter, the installation was easy with no problems, However there is a high pitch sound when I am driving, its overpowering the Blower whine, its hard to explain, when the car is in park and I Rev it I don't hear it. Any help is appreciated.

Mine does the same. Normal.

ZED SLED · 08-30-2018, 01:24 PM

Does sound like this at 1:55? My M6 with a Rotofab This is about 60mph in 2nd gear

BlaqWhole · 08-30-2018, 01:29 PM

There is the whine that comes from the blower and then there is the whistle that you'll hear as air gets sucked thru the air filter. And additionally you might be able to hear the sudden whoosh from air being sucked in super fast thru the TB when you go WOT. These are all normal. You have an open element setup and they are known to give that whistle even on NA cars. Mustang guys love it because they can pretend their car has forced induction as their IATs soar up to 145 degrees on a 65 degree evening.

collinms · 08-30-2018, 01:35 PM

Quote:

Originally Posted by ZED SLED

Does sound like this at 1:55? My M6 with a Rotofab This is about 60mph in 2nd gear

If that constant high pitched noise you are referring to, mine does not do that.

ZED SLED · 08-30-2018, 02:51 PM

Quote:

Originally Posted by collinms

If that constant high pitched noise you are referring to, mine does not do that.

I didn't know mine did until i saw this video. Can't really hear it from inside the car. Just hear the blower whine. I've watched Z06s go around the track that sounded the same way.

collinms · 08-30-2018, 03:01 PM

Quote:

Originally Posted by ZED SLED

I didn't know mine did until i saw this video. Can't really hear it from inside the car. Just hear the blower whine. I've watched Z06s go around the track that sounded the same way.

Interesting, it's possible mine does the same thing. If other cars are doing it as well I guess nothing to be worried about. I love mine.

stmeria · 08-30-2018, 03:18 PM

Thanks guys for all the responses, I had 2017 2ss with Rotofab and it didn’t make any of those noises, I guess the ZL1 is different, it just bothered me because it’s kind of louder than the blower whine. At least it’s normal so I have to get used to it.

Can'tHave2MuchHP · 08-30-2018, 07:55 PM

Some changes were made between 2017 and 2018 versions of the Roto-fab CAI. Some reported that putting the older style 2017 intake on had a whistling noise. Changing out for a 2018 seems to fix the issue. Mine makes a bit of a whine noise on throttle open but then it's all blower. To be driving around with a constant noise that's louder than blower whine doesn't sound normal to me. Call Roto-fab and they may be able to send you the updated surround that seals better.

stmeria · 08-31-2018, 03:43 AM

Quote:

Originally Posted by Can'tHave2MuchHP

Some changes were made between 2017 and 2018 versions of the Roto-fab CAI. Some reported that putting the older style 2017 intake on had a whistling noise. Changing out for a 2018 seems to fix the issue. Mine makes a bit of a whine noise on throttle open but then it's all blower. To be driving around with a constant noise that's louder than blower whine doesn't sound normal to me. Call Roto-fab and they may be able to send you the updated surround that seals better.

I will call them today, thank you for the information!

LT4 650 · 09-04-2018, 12:22 PM

Any word from Roto-fab on this as I am thinking about this mod next?

stmeria · 09-04-2018, 12:32 PM

Quote:

Originally Posted by LT4 650

Any word from Roto-fab on this as I am thinking about this mod next?

Roto Fab, is sending me different filter to see if this will eliminate the whistle

LT4 650 · 09-04-2018, 06:49 PM

Quote:

Originally Posted by stmeria

Roto Fab, is sending me different filter to see if this will eliminate the whistle

Very cool...can you please post back and let us know if anything changes?

Thanks

08-30-2018, 12:23 PM	#1
stmeria Drives: 2018 ZL1 Hyper Blue Join Date: Feb 2013 Location: Endicott, NY Posts: 81 View My Garage	Issues with Roto-Fab CAI - 2018 ZL1 A10 Just installed RotoFab Cold Air Intake with dry Filter, the installation was easy with no problems, However there is a high pitch sound when I am driving, its overpowering the Blower whine, its hard to explain, when the car is in park and I Rev it I don't hear it. Any help is appreciated. Attached Images __________________

08-30-2018, 01:24 PM	#4
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,477 View My Garage	Does sound like this at 1:55? My M6 with a Rotofab This is about 60mph in 2nd gear __________________

08-30-2018, 03:18 PM	#9
stmeria Drives: 2018 ZL1 Hyper Blue Join Date: Feb 2013 Location: Endicott, NY Posts: 81 View My Garage	Thanks guys for all the responses, I had 2017 2ss with Rotofab and it didn’t make any of those noises, I guess the ZL1 is different, it just bothered me because it’s kind of louder than the blower whine. At least it’s normal so I have to get used to it. __________________

09-04-2018, 12:22 PM	#12
LT4 650 Drives: 2018 ZL1 1LE M6 Join Date: Aug 2018 Location: AZ Posts: 175 View My Garage	Any word from Roto-fab on this as I am thinking about this mod next? __________________ 2018 ZLE - M6, Nightfall Gray GM previously owned: 2014 SS M6 2014 ZL1 M6 2019 ZL1 M6 2016 Z06 M6

08-30-2018, 12:31 PM	#2
Jimabe Drives: 2018 Red ZL1 Join Date: Mar 2018 Location: Spring grove IL Posts: 190	Is it constant? I have same. Rotofab on '18 Z. The pitch on mine changes with throttle blade position. When cracks open, it's high pitch for an instant then goes to a "woosh" of the rushing air through the system. I have put other CAI's on my other vehicles (trucks, cars) and have experienced a similar experience. Some guys call it an exhaust for your intake. The K/N on my Tundra is loud as hell. Some guys don't mind it, some do. I will say after i went to a Tony M TB and headers, can't hear it as much anymore...

08-30-2018, 01:29 PM	#5
BlaqWhole Account Suspended Drives: 2017 Camaro ZL1 A10 Join Date: May 2012 Location: NJ Posts: 7,692	There is the whine that comes from the blower and then there is the whistle that you'll hear as air gets sucked thru the air filter. And additionally you might be able to hear the sudden whoosh from air being sucked in super fast thru the TB when you go WOT. These are all normal. You have an open element setup and they are known to give that whistle even on NA cars. Mustang guys love it because they can pretend their car has forced induction as their IATs soar up to 145 degrees on a 65 degree evening.

08-30-2018, 07:55 PM	#10
Can'tHave2MuchHP Drives: Fast Join Date: Mar 2015 Location: Michigan Posts: 3,696	Some changes were made between 2017 and 2018 versions of the Roto-fab CAI. Some reported that putting the older style 2017 intake on had a whistling noise. Changing out for a 2018 seems to fix the issue. Mine makes a bit of a whine noise on throttle open but then it's all blower. To be driving around with a constant noise that's louder than blower whine doesn't sound normal to me. Call Roto-fab and they may be able to send you the updated surround that seals better.

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