Open Lid
Thread Starter
Team Owner
Joined: Sep 2002
Posts: 22,209
Likes: 12
From: OBAMA IS HITLER
Open Lid
Ok I'm gonna suck it up, shrink 12 inches & ask the most retarded question in the history of the CF. I've noticed many members have cut their lids as a mod to allow for freer air flow. Here's the question: doesn't this cause extra dirt to get in around the air filter? I wonder how godd this is for daily driving. Ok now I'm ready for the onslaught! :jester
Team Owner
Joined: Sep 2001
Posts: 62,143
Likes: 1,729
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Open Lid (bradvette)
the K&N takes up all the open area, you just may want to put some tape around the airbox if youre actually worried about that
But i didnt, the K&N took up all the area.
But i didnt, the K&N took up all the area.
Le Mans Master
Joined: Jun 2002
Posts: 6,883
Likes: 2
From: www.corvetteflorida.com
St. Jude Donor '03-'04-'05-'06-'07
Re: Open Lid (RadPolo96)
Mine also :D Go ahead and cut it :yesnod:
Don't know how much "real" performance it gives you, but it feels better and sounds :cool:
:seeya :flag
Don't know how much "real" performance it gives you, but it feels better and sounds :cool:
:seeya :flag
Safety Car
Joined: Jul 2002
Posts: 4,548
Likes: 3
From: SCMR Rat Pack'r Charter Member, Inland Empire Chapter
Re: Open Lid (vettmech)
Mines cut and I drive it every day ........no problems ever .......cut it :seeya
Le Mans Master
Joined: Jun 2002
Posts: 6,883
Likes: 2
From: www.corvetteflorida.com
St. Jude Donor '03-'04-'05-'06-'07
Re: Open Lid (DarkHalo)
X-actly why I don't live in California :lol: :lol: ...Just had to throw that in...they just dumped emission testing in Florida a few years back. :seeya
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Le Mans Master
Joined: Aug 2000
Posts: 5,192
Likes: 1
From: Airport Cruise-in 1 Veteran Airport Cruise-in 2 Veteran
Cruise-In II Veteran
Re: Open Lid (DarkHalo)
Will that affect smog inspections though? theyre REALLY tight about stuff like that out here in Cali...anyone have any info on that?
Instructor
Joined: Aug 2002
Posts: 197
Likes: 0
From: Cedar Park Texas USA
Re: Open Lid (bradvette)
You may want to look at this archived link before you do anything.
http://forums.corvetteforum.com/zerothread?id=92469
:seeya
http://forums.corvetteforum.com/zerothread?id=92469
:seeya
Burning Brakes
Joined: Feb 2002
Posts: 871
Likes: 1
From: Union KY
Re: Open Lid (bradvette)
Bradvette:
Remember the only realy dumb question is the one unasked. The stock C4 GM lid was designed to satisfy an internal GM standard that requires any of the General's cars to be able to drive unafected through (I think) 6" of standing water while the front end is hosed down with a monsoon level rain.
These are not exactly the conditions that most of us drive in. The K&N Cut Lid (or a home made unit) really doesn't have any affect on the driving rain problem. It could however cause problem with the GM standing water standard however. BTW, the car does run ever so slightly stronger with the K&N cut lid due to less restriction.
Cire96
P.S. You now know much more than you ever wanted to know about this topic. :cheers:
Remember the only realy dumb question is the one unasked. The stock C4 GM lid was designed to satisfy an internal GM standard that requires any of the General's cars to be able to drive unafected through (I think) 6" of standing water while the front end is hosed down with a monsoon level rain.
These are not exactly the conditions that most of us drive in. The K&N Cut Lid (or a home made unit) really doesn't have any affect on the driving rain problem. It could however cause problem with the GM standing water standard however. BTW, the car does run ever so slightly stronger with the K&N cut lid due to less restriction.
Cire96
P.S. You now know much more than you ever wanted to know about this topic. :cheers:
Le Mans Master
Joined: Aug 2000
Posts: 5,192
Likes: 1
From: Airport Cruise-in 1 Veteran Airport Cruise-in 2 Veteran
Cruise-In II Veteran
Re: Open Lid (91TurqC4)
You may want to look at this archived link before you do anything.
http://forums.corvetteforum.com/zerothread?id=92469
:seeya
http://forums.corvetteforum.com/zerothread?id=92469
:seeya
Some have used K&N and K&N claims HP gains, but do they really? Nobody can truly answer that unless they have tested at a track under the same exact conditions.
Burning Brakes
Joined: Sep 2002
Posts: 860
Likes: 0
From: Lexington NC
Re: Open Lid (bradvette)
Yeah. I want to know if anyone is getting more mpg's with the K&n and the cut?? Us automatic people get terrible mileage. I would ask for a pic of the cut lid but I am sure i will see enough a the NCM in June.
Drifting
Joined: Feb 2000
Posts: 1,994
Likes: 0
From: Charleston, WV
Re: Open Lid (BrianandDenise)
You may NOT see many cut lids at the NCM..........I have mine cut and it's not visible. I can FEEL it but I better not see anyone getting in there close enough to be able to tell............. know what I mean? :seeya
Team Owner
Joined: Apr 2002
Posts: 43,370
Likes: 0
Re: Open Lid (bradvette)
I cut the lid the other day. THOUGH I left it stock looking. Removed pop rivets, cut the plastic underneath larger and cut a big rectangle in the metal piece. Then put some pop rivets back on, looks very stock. Did it increase performance? I doubt it. Can now say I've cut the lid? :yesnod:
PS, I've HEARD that the cut lid only really makes a difference at higher speeds. Port and polish your MAF if you want less restricted air. It's the stealthiest mod you can do, and it feels stronger afterward. Remember, every little bit helps. Maybe the cut lid will give you 2 HP, 1ft/lb BUT if you think about it, any number can be divided by two. You can port and polish your heads, let's say that gives you 50 HP. Well 25 free mods with 2 HP gains will equal that. 2 HP is 2 HP, and as always, more is better. Marginal increases are still increases. Just some food for thought.
[Modified by GDP, 5:53 PM 10/2/2002]
PS, I've HEARD that the cut lid only really makes a difference at higher speeds. Port and polish your MAF if you want less restricted air. It's the stealthiest mod you can do, and it feels stronger afterward. Remember, every little bit helps. Maybe the cut lid will give you 2 HP, 1ft/lb BUT if you think about it, any number can be divided by two. You can port and polish your heads, let's say that gives you 50 HP. Well 25 free mods with 2 HP gains will equal that. 2 HP is 2 HP, and as always, more is better. Marginal increases are still increases. Just some food for thought.
[Modified by GDP, 5:53 PM 10/2/2002]
Le Mans Master
Joined: Mar 2002
Posts: 8,289
Likes: 86
From: Kennesaw Jawga
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06-'07
Re: Open Lid (cire96)
Could someone please tell me some detailed instructions on how to do this? I would really apreciate it! I think that i could do it if it doesnt require any real sophisticated tools.
Team Owner
Joined: May 2001
Posts: 25,050
Likes: 1,265
From: Virginia
St. Jude Donor '11
Re: Open Lid (bradvette)
No extra dirt gets in around mine...its a tight fit on mine...although I didn't cut mine...I just bought another one already done and if I want to go back to stock I dont have to buy a new one...cause I now have the old one...go figure!...pay now save later... :D :cheers: