03-16-2018, 08:06 AM | #1 |
Drives: 2018 Black ZL1 A10 Join Date: Jul 2016
Location: Tri-Cities Tennessee
Posts: 91
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Issues with Roto-Fab CAI - High Pitched Whistling
Hey all. I've had a Roto-Fab CAI installed on my '18 ZL1 for about a week now. I've been noticing a very high pitched whistling noise coming from the engine bay. The sound is very noticeable with the windows up, but with the windows down it's almost unbearable at times.
From what I understand.. a slight whistle is normal for many after market cold air intakes, but this seems a little excessive. It's worth noting that there were problems seating the metal housing into the engine bay and it seems to have left a slightly bigger gap between my hood and driver's front quarter panel as compared to the passenger's side. I'm unsure whether an incorrect seating of the CAI would be the cause or if the whistling is normal?
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Current Car:
2018 Camaro ZL1 | Black | A10 | PDR | Nav | Sunroof | CF Hood Insert | CF Instrument Panel Mod List: Corsa Extreme Axle-Back | Borla X-Pipe (#60607) | Roto-Fab CAI | GM Dark Tail Lamps | GM Dark Third Brake Lamp | DD Dark Side Markers | GM CF Fuel Door | Rear Reflector Blackout Kit | Xpel Clear Bra | Modesta BC-08 Ceramic Coat |
03-16-2018, 09:45 AM | #2 |
Drives: ZL1/335i Join Date: Apr 2014
Location: Santa Barbara
Posts: 870
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Are you talking about the noise you hear under part load — say half throttle? Most open filter intakes sound like this, but I don’t hear anything from mine at light throttle or a steady cruise. Under some load, yes.
And for what it’s worth, I had issues at first getting the heat shield seated. One of the mounts is adjustable, and tweaking it made all the difference. Getting all the silicone hoses aligned can be a little tough too. You sure you don’t have any air leaks from the couplers? |
03-16-2018, 03:53 PM | #3 | |
Drives: 16 Camaro SS w/ Roto-fab CAI Join Date: May 2009
Location: Arizona
Posts: 2,682
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Quote:
For the last few months, we've made this modification to all orders known to be for the 2018 ZL1. Meanwhile, we have been receiving feedback from some of our dealers concerning fitment on the 2018 cars. So far none of them have reported back with this problem using the 2017 version on 2018 cars. Harrist5683, I will PM you with contact information so we can work to resolve these issues over the weekend. |
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03-16-2018, 03:55 PM | #4 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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I have a Roto-Fab dry intake sitting in my garage waiting for my 2018 ZL1. It's going to fit improperly you're telling me now?
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03-16-2018, 04:21 PM | #5 |
Drives: 2017 ZL1 A10, 2015 C7 Z51 Join Date: Aug 2011
Location: Atlanta, GA
Posts: 222
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Mine is a '17 and makes a more noticeable whistling noise than say my gen 2 CTS-V with an Airaid intake. Not really happy with how audible it is, but really don't want to spend more money trying other vendors.
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2017 Camaro ZL1 - Nightfall Gray Metallic - A10 - Roto-Fab intake
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03-16-2018, 09:09 PM | #6 | |
Drives: 2018 Black ZL1 A10 Join Date: Jul 2016
Location: Tri-Cities Tennessee
Posts: 91
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Quote:
__________________
Current Car:
2018 Camaro ZL1 | Black | A10 | PDR | Nav | Sunroof | CF Hood Insert | CF Instrument Panel Mod List: Corsa Extreme Axle-Back | Borla X-Pipe (#60607) | Roto-Fab CAI | GM Dark Tail Lamps | GM Dark Third Brake Lamp | DD Dark Side Markers | GM CF Fuel Door | Rear Reflector Blackout Kit | Xpel Clear Bra | Modesta BC-08 Ceramic Coat |
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03-17-2018, 07:00 AM | #7 |
Drives: 2017 Bright Yellow ZL1 6spd Join Date: May 2010
Location: Central MA
Posts: 642
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My 2017 did it. I took it off and sold it.
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2017 ZL1 Bright Yellow w/ black center stripe, 6 speed, CF gas door, PDR, Navi
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03-17-2018, 11:36 AM | #8 |
Drives: ZL1/335i Join Date: Apr 2014
Location: Santa Barbara
Posts: 870
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I didn’t specify my car was a 2018, so I’m guessing that’s why I had minor fitment issues. Adjusting the rear mount/s (can’t remember if it was one or both) was all I needed.
I don’t think I’d consider what I hear a “whistle” though. More like a honk kind of noise under lighter (no boost) acceleration, which turns into awesome blower whine when into boost. |
03-17-2018, 11:52 AM | #9 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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So you can adjust it so the whistle isn't there or should I return mine now?
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03-17-2018, 07:14 PM | #10 | |
Drives: 2018 ZL1 M6 Join Date: Dec 2017
Location: CA
Posts: 301
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Quote:
FYI: I ordered my also with the dry filter for my 2018 M6. Rotofab sent me the correct modified unit and it went in super easy. Just remember to flip over your old housing to be sure the grommets did not lift off from the car. If they did just remove And place back on the car. |
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03-17-2018, 07:30 PM | #11 | |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Quote:
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03-19-2018, 12:33 PM | #12 |
Drives: 2018 Black ZL1 A10 Join Date: Jul 2016
Location: Tri-Cities Tennessee
Posts: 91
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Update: I spoke with Roto-Fab customer service on the phone and they told me that they are in the process of developing a new air box that will fit any model year Gen6 ZL1. Once the development is complete, they will be sending me one of the new air boxes (few weeks from now).
It's worth mentioning that I had the option to be sent the solution that roto-fab mentions above, but I preferred to just receive the newest air box version instead.
__________________
Current Car:
2018 Camaro ZL1 | Black | A10 | PDR | Nav | Sunroof | CF Hood Insert | CF Instrument Panel Mod List: Corsa Extreme Axle-Back | Borla X-Pipe (#60607) | Roto-Fab CAI | GM Dark Tail Lamps | GM Dark Third Brake Lamp | DD Dark Side Markers | GM CF Fuel Door | Rear Reflector Blackout Kit | Xpel Clear Bra | Modesta BC-08 Ceramic Coat |
07-20-2019, 08:52 PM | #13 |
Drives: 2019 ZL1 A10 Black Join Date: Jan 2019
Location: AB
Posts: 93
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I just put this on my 19 zl1 and the whistle is quite loud under moderate acceleration I checked all my clamps and everything and I don’t see what could be causing this
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07-20-2019, 09:02 PM | #14 |
Drives: 2019 ZL-1, Shadow Gray, Sold Join Date: Jan 2019
Location: Fredericksburg, VA
Posts: 1,390
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You know this is an old thread.
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