C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
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Old Nov 15, 2007 | 04:15 PM
  #21  
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You're right, I didnt log the stock intake...but the design of the stock intake pulls air in from the top...not the bottom, so it wouldnt have nearly the velocity of air that would be picked up by the K&N with the open shroud.

Of course this is just all what is sensible to me...not necessarily fact.

Either way...my K&N with open shroud scoots a lot better than with stock intake, so I'm more than happy with it
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Old Nov 15, 2007 | 07:53 PM
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This is what it looks like. I have the free cold air also.

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Old Nov 15, 2007 | 08:02 PM
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Originally Posted by VET4LES
This is what it looks like. I have the free cold air also.

Damn, another clean engine compartment ..........................
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Old Nov 15, 2007 | 08:34 PM
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That is the LS2 version, with the Z06/LS3 version the airbridge and filter are much improved.
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Old Nov 15, 2007 | 08:46 PM
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Originally Posted by 4 MY EGO
Damn, another clean engine compartment ..........................
Looks great. Also looks like an easy install. Could you tell me what the model number is? Is this for the LS2 engine? Thanks Leif
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Old Nov 15, 2007 | 08:51 PM
  #26  
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Originally Posted by FloydSummerOf68
I just got one for 150 used....I didnt want a vararam because they look like crap and I didnt want a vortex because it was more money than I wanted to pay for an intake setup even though they look really nice.

i havent installed it yet, but with the shroud propped open it scoops up a considerable amount of air for the k&n to take in. If you prop th shroud open ~3inches on both sides it actually form a scooping shape that you can see just by getting down and looking into the grill on the front of the car....is it as good as the vortex or vararam? probably not...is it a lot better than stock? probably.

I'm going to be going to the track this weekend to test the differences (assuming it's open to the public...they may have some big event going on) and will see what I pick up. My car is VERY consistant and very predictable, so I will have a good idea what it gains.
How are you proping the shroud open? In your opinon do you think the K&N is worth the money? I would rather not cut into the shroud if it will not make that much of a diference betweeen the two. Thanks Leif
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Old Nov 15, 2007 | 08:58 PM
  #27  
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Originally Posted by 11secondGP
If you want to avoid heat soak you can just block off the filter area from the engine. My IATs are low right off the line. Not sure how I could be losing power if I am pulling in ambient air temps.

Definition of a cold air intake = One that instantly pulls in ambient air temps.

Fair enough? Well that is what mine does therefore it would be a CAI.
Yes, blocking off the engine compartment from the inlet is an excellent idea. I just can't imagine why the factory didn't do this. We logged CBRF's car and it was taking about 12 seconds to get down to ambient, so if yours is doing it immediately it sounds like you have a great set-up.
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Old Nov 15, 2007 | 09:00 PM
  #28  
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One more thing. I will never say anything bad about K&N. They have the best customer service in the business! They have replaced 2 broken units, one on a 94 Z28 and one on my Vette. No questions asked, just did it. They are first class in my book!
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Old Nov 15, 2007 | 09:19 PM
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Originally Posted by 4 MY EGO
Damn, another clean engine compartment ..........................
You wouldnt have a vararam would you?
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Old Nov 15, 2007 | 09:26 PM
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Originally Posted by cleif2000
Looks great. Also looks like an easy install. Could you tell me what the model number is? Is this for the LS2 engine? Thanks Leif
My C6 is an 05 LS2 and the K&N model # is 57-3052. It is the only one that is CARB approved. Check out their web page for the model # of 2006 and later. My understanding is they are all constructed the same but the 05 cost more because of the CARB approval. Check it out.
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Old Nov 16, 2007 | 12:04 AM
  #31  
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Regarding price, I originally bought mine directly from K&N but they are not the best deal. I tried to get K&N to match the price but they said ship it back. So that is what I did. I returned that one to K&N and bought one from Ebay for about $100 less.

Conclusion: Don't buy from K&N directly. Check Ebay.

I love the carbon fiber look and like the fact I did not have to cut the shroud.

Last edited by Mez; Nov 16, 2007 at 05:06 AM.
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Old Nov 16, 2007 | 10:02 AM
  #32  
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Originally Posted by cleif2000
How are you proping the shroud open? In your opinon do you think the K&N is worth the money? I would rather not cut into the shroud if it will not make that much of a diference betweeen the two. Thanks Leif
I have the shroud propped open with two 4inch screws...the picture posted does not come NEAR to how open my shroud is. You look down the engine bay and see a huge gap where air is coming from

Yes, it was VERY worth the money since I picked it up for 150 shipped.

If you look on ebay you can get them for 255 + shipping new.
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Old Nov 16, 2007 | 10:24 AM
  #33  
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Originally Posted by cleif2000
How are you proping the shroud open? In your opinon do you think the K&N is worth the money? I would rather not cut into the shroud if it will not make that much of a diference betweeen the two. Thanks Leif Thanks Leif
Check out this thread...shows you exactly what you need and how to prop the shroud open. I also added a comment there myself for the install. btw-its only $40 for a new shroud and $55.00 for a pre-cut shroud (from MTI). If you are not drag racing, I dont think it makes much difference, but (and 11secondgp's mod aside) I think its worth about a .10 second difference between the warm air K&N/propped shroud and a true cold air inlet. Not to mention having a cooler intake. Its stands to reason a closed system will be cooler than an open one that lets hot underhood air in.

http://forums.corvetteforum.com/show...t=toggle+bolts

Last edited by siffert; Nov 16, 2007 at 11:17 AM.
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Old Nov 16, 2007 | 03:10 PM
  #34  
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Originally Posted by VET4LES
This is what it looks like. I have the free cold air also.

Looks exactly like my old Halltech. I had the cold air added as well. My Vararam was a consistent .2 and 2 mph improvement over my Halltech. However, I didn't have the popped shroud which my have made a difference..interesting.

For the poster, if you don't run at the track and want the best possible ET's and/or mph, get what floats your boat. Certainly can't go wrong with the K&N and a popped shroud might give you a little extra oomph.
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Old Nov 16, 2007 | 03:21 PM
  #35  
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Looks exactly like my old Halltech.
That is the reason I didnt go with the Halltech, it has the same restriction the K&N LS2 version has at the filter inlet.

If you look at the Z06/LS3 version the air bridge has a much better design in that the filter opening is MUCH larger, like the stock Z06 air bridge.

The best CAI not only gets cold air but has the least restriction IMO.
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Old Nov 16, 2007 | 03:30 PM
  #36  
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I am using the K&N and, though it isn't a true CAI as others are very quick to point out, I think it is a high quality piece. Could have just been dirty stock filters for me but my car definately felt like it picked up a couple HP. I have no data to prove this other than the SOTP feel and the fact that the car is a little more slippery in 2nd than before.

I bought the vette-air also but will probably not install that until end of winter because I am contemplating a supercharger.
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Old Nov 16, 2007 | 04:19 PM
  #37  
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Originally Posted by Mez
Regarding price, I originally bought mine directly from K&N but they are not the best deal. I tried to get K&N to match the price but they said ship it back. So that is what I did. I returned that one to K&N and bought one from Ebay for about $100 less.

Conclusion: Don't buy from K&N directly. Check Ebay.
K&N has to protect their wholesale customers or non of them will sell K&N...
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Old Nov 16, 2007 | 04:21 PM
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Originally Posted by 4 MY EGO
Damn, another clean engine compartment ..........................
I don't know, the car is three years old and I think I see a piece of lint on the fuel rail cover...
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Old Nov 18, 2007 | 09:26 AM
  #39  
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Well I couldn't wait so I installed the vette-air yesterday. The install went fine and I'm happy with it but I'm not sure why GM wouldn't do something like this from the factory. Many other cars have ducts to bring in outside (cold) air and it doesn't seem like it would be too hard to seal off the air intake section from the rest of the hot engine bay. If I do another one day I'll probably remove the shroud so I can make a better connection between the vette air scoop and the shroud. I guess in that case a vararam would be easier...
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Old Nov 18, 2007 | 11:36 AM
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Well,in reality GM did do something like this.If you would've drilled 3 or 4 holes on both sides of the stock setup,you would've gotten the same effect that you will get with the VETTE AIR,since all that does is open the front to let some cooler air in.What it does not do is directly inject cooler air into the T.B/MAF thing like the VARARAM,Callaway etc..
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