View Poll Results: Does your FAST intake make a hissing/sucking sound (especially at cold idle)?
Yes, a hissing sound is normal with a FAST intake
37
80.43%
No, my intake does not make any strange sounds
9
19.57%
Voters: 46. You may not vote on this poll
If you have a Fast intake, please read
Thread Starter
11 Second Club
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Joined: Mar 2008
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From: Northwest AR
If you have a Fast intake, please read While fixing a radiator problem the other day I started the car with the filter/MAF/etc off. The car has made a sucking/hissing sound since the intake went on a couple years ago that I thought was coming from the filter.
But it is clearly coming from the intake mouth/throttle body.
Does your car do this? Just double checking to make sure it's normal or if I need to pull it apart and check for internal leaks or anything. It was apart for porting and I reused the old gasket when I did it.
But it is clearly coming from the intake mouth/throttle body.
Does your car do this? Just double checking to make sure it's normal or if I need to pull it apart and check for internal leaks or anything. It was apart for porting and I reused the old gasket when I did it.
Mine makes a noticeable sucking sound, but it sounds like its coming from the lid. Started it when I installed my FAST. I figured it was just due to the lid not fitting quite right. I think its only at cold idle.
Well, the air gets sucked into the motor from there.....so a sucking sound is normal when you start the car. When it's idling, the throttle plate is closed and air is being sucked through small openings to keep the car running so depending on the TB, it might hiss or make some noise.
Is this a serious question?
Is this a serious question?
Thread Starter
11 Second Club
iTrader: (18)
Joined: Mar 2008
Posts: 8,358
Likes: 27
From: Northwest AR
Yes it is a serious question. The volume is what I found odd. It might seem obvious but I've learned not to take things for granted.
It is loud enough you can hear it over the dumped duals from inside the car. The old ls1 intake didn't make such sounds or if it did they were not audible over the exhaust (which was much quieter at the time).
I honestly expect it is normal, but have never been around another car with a fast in person. No ls1 or ls6 intake fbody I've been around makes similar sounds so I don't have much to compare to.
It is loud enough you can hear it over the dumped duals from inside the car. The old ls1 intake didn't make such sounds or if it did they were not audible over the exhaust (which was much quieter at the time).
I honestly expect it is normal, but have never been around another car with a fast in person. No ls1 or ls6 intake fbody I've been around makes similar sounds so I don't have much to compare to.
You can hear it over your exhaust? That doesn't seem right. I just installed my proflo and the sucking is way louder than my ls1 intake but this is at the lid when standing in front of the car with the Hood open.
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Didn't really notice a difference in sound between the LS6 and FAST 78, but the 92 goes on in about a week along with a NW 92 and I'll be able to update then....
I know when I installed my Chrs1313 non-AC ram air, it sounded like the scoop would suck up a small child when I started the car
I know when I installed my Chrs1313 non-AC ram air, it sounded like the scoop would suck up a small child when I started the car
Last edited by dr_whigham; May 31, 2012 at 09:08 AM.
Didn't really notice a difference in sound between the LS6 and FAST 78, but the 92 goes on in about a week along with a NW 92 and I'll be able to update then....
I know when I installed my Chrs1313 non-AC ram air, it sounded like the scoop would suck up a small child when I started the car
I know when I installed my Chrs1313 non-AC ram air, it sounded like the scoop would suck up a small child when I started the car
^^ just installed chrs1313 too last weekend, mine is the ac version and I can hear it sucking even at idle, I sealed up everything real good tho to make sure air only coming in 1 way
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Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Having just installed a FAST LSXR and 102TB, I am bringing this thread back to say that I am very annoyed by the loud "sucking" sound coming through the intake pipes and air filter. Like ThunderStruck, I have a very loud exhaust, yet the intake sound is louder than the exhaust when sitting in the car. Looking through older posts and the Vette forums, many others are noting this too. Many believe it is actually valvetrain sound being amplified by the manifold.
Perhaps plastic pipes between the TB and filter will solve it, but unless it is a lot faster at the track then my previous 4150 style intake, it is coming off.
Perhaps plastic pipes between the TB and filter will solve it, but unless it is a lot faster at the track then my previous 4150 style intake, it is coming off.