Base Stingray air intake
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
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From: SUFFIELD CONNECTICUT
Base Stingray air intake
What do those big plastic bulges in the intake housing do? Sound control? other than provide filtered air to the pcv hoses that come off each valve cover. When I look at a AFE CAI, that doesn't exist and is there still a place to plug in those valve cover breathers. Why not just put filtered breathers on the valve covers to remove those silly hoses.
One more thing, anyone experiencing a off idle slight hesitation or lazy tip in. This is with the stock intake track, no mods and only 400 miles on a 15 car.
One more thing, anyone experiencing a off idle slight hesitation or lazy tip in. This is with the stock intake track, no mods and only 400 miles on a 15 car.
Last edited by BJ67; May 3, 2015 at 12:49 PM.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
Bingo.
There are dozens of active threads (and hundreds of inactive threads now) discussing every facet of the PCV system with regard to catch cans and routing options. I will say that if you were to put breathers on those valve covers, you will be cleaning oil off of everything in your bay for a week, and replacing your fabric hood liner. 
This is a commonality across all C7s. It's a sort of 'lazy pedal syndrome' inherent in drive-by-wire. The throttle response can be improved greatly with a tune, be it a full HPT dyno tune, Trifecta, or Diablo handheld.
This is a commonality across all C7s. It's a sort of 'lazy pedal syndrome' inherent in drive-by-wire. The throttle response can be improved greatly with a tune, be it a full HPT dyno tune, Trifecta, or Diablo handheld.
Burning Brakes
Joined: Oct 2012
Posts: 873
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From: Katy Texas
And, the PCV system is all "metered" air, if you were to just put breathers on, not only would you be cleaning your engine bay, but allowing unmetered air in your engine causing all types of potential driveabilty issues and environmental issues.
Melting Slicks
Joined: Nov 2013
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From: Texas
Explanation? I don’t have one but the car is completely stock, no tune or engine changes. I’m all smiles. Don
Thread Starter
Melting Slicks
Joined: Nov 2012
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From: SUFFIELD CONNECTICUT
I definitely had that issue. The cars drivetrain has gotten steadily more smooth with miles, now at 4750. The lazy tip has been completely gone for quite sometime.
Explanation? I don’t have one but the car is completely stock, no tune or engine changes. I’m all smiles. Don
Explanation? I don’t have one but the car is completely stock, no tune or engine changes. I’m all smiles. Don
Race Director
Joined: Jul 2007
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From: Texas Hill Country
I definitely had that issue. The cars drivetrain has gotten steadily more smooth with miles, now at 4750. The lazy tip has been completely gone for quite sometime.
Explanation? I don’t have one but the car is completely stock, no tune or engine changes. I’m all smiles. Don
Explanation? I don’t have one but the car is completely stock, no tune or engine changes. I’m all smiles. Don
it's amazing how the mind works, i really mean that. we can change the world just by changing our thoughts. my car runs faster and smoother every time I wash it. when it is dirty it is a rough running pos!!!
when it's clean i will swerve around bugs....get some dirt on the windshield and I will cut through the ditch to save 30 seconds!
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
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Le Mans Master
Joined: Aug 2005
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From: CA.
St. Jude Donor '13-'14-'15
I have a different opinion------I am running BREATHERS on both of the valve covers and have capped off those 2 lines on my AFE CAI-- NO there is "0" oil being sprayed in the engine bay --totally dry---And the PCV system works far better as there is no restriction in the PCV inlet tract---I also have a UPR catch can---last check the intake manifold was completely DRY inside----NO oil or oil residue----Yes in stock trim the PCV air is metered by the MAF--- however with tuning you can make a small adjustment to the MAF table to correct--
Race Director
Joined: Jul 2007
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From: Texas Hill Country
I have a different opinion------I am running BREATHERS on both of the valve covers and have capped off those 2 lines on my AFE CAI-- NO there is "0" oil being sprayed in the engine bay --totally dry---And the PCV system works far better as there is no restriction in the PCV inlet tract---I also have a UPR catch can---last check the intake manifold was completely DRY inside----NO oil or oil residue----Yes in stock trim the PCV air is metered by the MAF--- however with tuning you can make a small adjustment to the MAF table to correct--
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
I have a different opinion------I am running BREATHERS on both of the valve covers and have capped off those 2 lines on my AFE CAI-- NO there is "0" oil being sprayed in the engine bay --totally dry---And the PCV system works far better as there is no restriction in the PCV inlet tract---I also have a UPR catch can---last check the intake manifold was completely DRY inside----NO oil or oil residue----Yes in stock trim the PCV air is metered by the MAF--- however with tuning you can make a small adjustment to the MAF table to correct--
Race Director
Joined: Jul 2007
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From: Texas Hill Country
I didn't think it would spray oil at wot, but wasn't sure. I am running an elite engineering catch can, I am going to try your set up which is what I was going to do. As far as unmetered air being drawn thru the breathers, how does that change being plugged into the air intake track? Does it make the air fuel ratio slightly leaner?
i really can't understand why someone would want to do something that has been a proven failure for a long time...."yeah we tried square wheels a while back but I guess if you want to see if it works today go ahead."
Heel & Toe
Joined: May 2015
Posts: 17
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From: Newburgh NY
What do those big plastic bulges in the intake housing do? Sound control? other than provide filtered air to the pcv hoses that come off each valve cover. When I look at a AFE CAI, that doesn't exist and is there still a place to plug in those valve cover breathers. Why not just put filtered breathers on the valve covers to remove those silly hoses.
One more thing, anyone experiencing a off idle slight hesitation or lazy tip in. This is with the stock intake track, no mods and only 400 miles on a 15 car.
One more thing, anyone experiencing a off idle slight hesitation or lazy tip in. This is with the stock intake track, no mods and only 400 miles on a 15 car.
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
My car has a slight hesitation accompanied by a "sucking" sound when the throttle is depressed quickly. The dealer said there was nothing wrong with the car...because "they all did it". I didn't like that answer so I called Nora Roper who is the Assistant Plant Manager at Bowling Green. I spoke to Nora when I did my 6th museum delivery last July. Anyway, she told me that she would speak to the engineers and get me an answer...true to her word, she called me back 2 or 3 days later. Well, the engineers said..."they all do it!!! LOL Apparently it's a function of the "fuel management system" and its lack of sound insulation. My car has 5,000 miles on it now, and the sound continues...and it pisses me off every time that I hear it.
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
Likes: 686
From: SUFFIELD CONNECTICUT
My car has a slight hesitation accompanied by a "sucking" sound when the throttle is depressed quickly. The dealer said there was nothing wrong with the car...because "they all did it". I didn't like that answer so I called Nora Roper who is the Assistant Plant Manager at Bowling Green. I spoke to Nora when I did my 6th museum delivery last July. Anyway, she told me that she would speak to the engineers and get me an answer...true to her word, she called me back 2 or 3 days later. Well, the engineers said..."they all do it!!! LOL Apparently it's a function of the "fuel management system" and its lack of sound insulation. My car has 5,000 miles on it now, and the sound continues...and it pisses me off every time that I hear it.
Thread Starter
Melting Slicks
Joined: Nov 2012
Posts: 3,163
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From: SUFFIELD CONNECTICUT
Not trying, but sucking in crankcase fumes never makes engines run better. I realize its a emission function and I realize a lot of functions are a compromise. If I illegally made a few more horses and sucked in less crap, I win