No-Brainer Open Airbox question:

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Jan 7, 2002 | 04:27 PM

YellowFvr

Thread Starter

Racer

Joined: Aug 2001

Posts: 313

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From: CA

No-Brainer Open Airbox question:

OK, this may sound dumb, but I just want to make sure i do this right. For the open airbox setup in my 94, should I unscrew the 3 big screws, then take the entire black metal lid off, leaving the whole filter exposed?

thanks ;)

Jan 7, 2002 | 04:41 PM

CowboyNVette

Le Mans Master

Joined: Feb 1999

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From: Pineville, Louisiana

Re: No-Brainer Open Airbox question: (YellowFvr)

Are you replaceing the black lid that covers the filter with one that is opened up or you cutting your existing cover to open it up?

Jan 7, 2002 | 04:44 PM

Secondvet

Instructor

Joined: May 2001

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From: New Albany In

Re: No-Brainer Open Airbox question: (YellowFvr)

Not quite that simple but almost, you must either replace the one you have (cover) with one with the louvers cut out or cut out the one you have. I purchased mine already cut from MAD. Can also do search on this topic, much info there. :flag

Jan 7, 2002 | 06:10 PM

Ruby_Roadster

Instructor

Joined: Mar 2001

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From: Melbourne Victoria

Re: No-Brainer Open Airbox question: (YellowFvr)

[1] Unscrew the mounting screws, end ones go through to the schroud and middle one holds the top to the main filter cover. [2] loosen the metal hoop retainer that holds the filter cover to the air intake. [3] take the whole filter assembly off. [4] Take filter top off [5] Mark a line 1" in from all the edges on the top. [6] Use a electric hacksaw and cut on the lines marked and then file the edges to get them smooth. [7] You now have a HUGE open area for it to suck air through. [8] Put everything back in reverse order - start it up and ENJOY (it will sound different)
:cheers: P.S. You can paint the cut/filed areas black so there is no silver metal showing

Jan 7, 2002 | 06:54 PM

Blue 92

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From: Columbus Ohio

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St. Jude Donor '06-'08-'10

Re: No-Brainer Open Airbox question: (Ruby_Roadster)

Or buy a pre-cut lid.
http://www.corvetteforum.net/c4/blue92/cut_lid.shtml

Jan 7, 2002 | 06:57 PM

mackeyred96

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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey

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Cruise-In VII Veteran

Re: No-Brainer Open Airbox question: (YellowFvr)

OK, this may sound dumb... YOU RIGHT BUT CLOSE ;)

Jan 7, 2002 | 09:32 PM

Mr Mojo

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From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo

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Re: No-Brainer Open Airbox question: (mackeyred96)

I wouldn't bother with it at all, doesn't do anything.

Jan 7, 2002 | 10:08 PM

Nathan Plemons

Race Director

Joined: May 2001

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Re: No-Brainer Open Airbox question: (Mr Mojo)

Mojo is probably right in that it doesn't do much for performance. What it does do is allow you to use the entire surface area of the filter. A filter in the stock housing will get dirty in the very small opening where the air actually comes through it, the rest of the filter is more or less wasted. If you open the lid, the same volume of air will be drawn over a larger area, essentially prolonging the useful life of the filter because you are using the whole surface area instead of a part the size of a business card.

That's the way I look at it anyway, as I notice my K&N is getting dirty slowly, uniformly over the whole area instead of one heavily soiled spot. I bought an open lid, one of my first mods.