LS7: Whistling from Halltech intake
Thread Starter
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
LS7: Whistling from Halltech intake
I bought a used Halltech intake off of another C6Z. I got to ride in his car while it was still installed on his vehicle, and you could definitely hear it sucking in air.
When I swapped it into my car, I noticed that at 30% throttle it would make a whistling noise. The whistling noise disappeared after 40% throttle. The car definitely seems more responsive now and I'm not getting any dash or CEL lights.
I figured it was an air leak though so I retightened all the clamps on the intake, but it's still making that whistling noise. I looked it up and apparently some Camaro SS's with aftermarket intakes make the same noise at around 30% throttle, and it's considered normal:
https://www.coldairinductions.com/wh...ntake-whistle/
So my question is, is the whistling normal or is it a sign of a vacuum leak somewhere?
When I swapped it into my car, I noticed that at 30% throttle it would make a whistling noise. The whistling noise disappeared after 40% throttle. The car definitely seems more responsive now and I'm not getting any dash or CEL lights.
I figured it was an air leak though so I retightened all the clamps on the intake, but it's still making that whistling noise. I looked it up and apparently some Camaro SS's with aftermarket intakes make the same noise at around 30% throttle, and it's considered normal:
https://www.coldairinductions.com/wh...ntake-whistle/
So my question is, is the whistling normal or is it a sign of a vacuum leak somewhere?
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,628
Likes: 4,071
From: Cape Coral, Florida
I bought a used Halltech intake off of another C6Z. I got to ride in his car while it was still installed on his vehicle, and you could definitely hear it sucking in air.
When I swapped it into my car, I noticed that at 30% throttle it would make a whistling noise. The whistling noise disappeared after 40% throttle. The car definitely seems more responsive now and I'm not getting any dash or CEL lights.
I figured it was an air leak though so I retightened all the clamps on the intake, but it's still making that whistling noise. I looked it up and apparently some Camaro SS's with aftermarket intakes make the same noise at around 30% throttle, and it's considered normal:
https://www.coldairinductions.com/wh...ntake-whistle/
So my question is, is the whistling normal or is it a sign of a vacuum leak somewhere?
When I swapped it into my car, I noticed that at 30% throttle it would make a whistling noise. The whistling noise disappeared after 40% throttle. The car definitely seems more responsive now and I'm not getting any dash or CEL lights.
I figured it was an air leak though so I retightened all the clamps on the intake, but it's still making that whistling noise. I looked it up and apparently some Camaro SS's with aftermarket intakes make the same noise at around 30% throttle, and it's considered normal:
https://www.coldairinductions.com/wh...ntake-whistle/
So my question is, is the whistling normal or is it a sign of a vacuum leak somewhere?
Team Owner
Joined: Dec 2008
Posts: 35,874
Likes: 1,600
From: Honolulu HI
Normal. Jim Hall explained it on here years back...its the increased velocity of the air intake and the whistle comes from a lip in the OE TB. I assume you still have a stock, untouched TB...yes? Porting the TB would do away with the whistle. My MF103 and stock TB does the same thing under slight throttle conditions.
Here's my thread from 2012 on the same exact question...Jim Hall chimes in on post #4: https://www.corvetteforum.com/forums...e-whistle.html
Here's my thread from 2012 on the same exact question...Jim Hall chimes in on post #4: https://www.corvetteforum.com/forums...e-whistle.html
Last edited by MTPZ06; Sep 17, 2018 at 05:00 PM.
Thread Starter
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
Normal. Jim Hall explained it on here years back...its the increased velocity of the air intake and the whistle comes from a lip in the OE TB. I assume you still have a stock, untouched TB...yes? Porting the TB would do away with the whistle. My MF103 and stock TB does the same thing under slight throttle conditions.
Here's my thread from 2012 on the same exact question...Jim Hall chimes in on post #4: https://www.corvetteforum.com/forums...e-whistle.html
Here's my thread from 2012 on the same exact question...Jim Hall chimes in on post #4: https://www.corvetteforum.com/forums...e-whistle.html
