Gutting air box
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Postmaster
Joined: Jun 2004
Posts: 2,665
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From: B/CS, Texas!!
Gutting air box
I've been reading some things of people 'gutting' their air box for a little performance gain. I was wondering if anyone has done this to theirs? Would be something for me to do.. 
Tuned
Joined: May 2005
Posts: 436
Likes: 0
From: MI
Any air intake mods you do will have no difference in your trucks performance unless you have done more mods as well. Things like a higher flowing exhaust, performance air filter, ect. must be done along with or before for you to notice any difference.
How ever, there is a somewhat risky mod you can do with the MAF casting that will allow a more snappy throttle response. Go to http://www.roguesecurity.com/ModifiedMAF.html
Many will probably reccomend againts doing this. Be careful if you do. I, myself, have noticed quite a difference after I did this. But, I also have a K&N filter(used, $10 off eBay!!!), no cat. converter, and a 3" exhaust from y-pipe collector to a Flowmaster 40 Series(also used, $10). It may not show as much a difference for you.
How ever, there is a somewhat risky mod you can do with the MAF casting that will allow a more snappy throttle response. Go to http://www.roguesecurity.com/ModifiedMAF.html
Many will probably reccomend againts doing this. Be careful if you do. I, myself, have noticed quite a difference after I did this. But, I also have a K&N filter(used, $10 off eBay!!!), no cat. converter, and a 3" exhaust from y-pipe collector to a Flowmaster 40 Series(also used, $10). It may not show as much a difference for you.
Lead Driver
Joined: Nov 2002
Posts: 9,557
Likes: 44
From: Concord, NC
Gutting the MAF like that is in my opinion a bad idea. It changes the air flow characteristics of the sensor; this difference in air flow is not accompanied by a difference in sensor output voltage, so the mass flow calculation in the computer will be wrong. Whether it is wrong enough to make a difference or not, I couldn't say. It's really up to the owner of the vehicle, but I wouldn't do it to mine. The parts of the airbox that I would think could be cut any would be the end of the inlet pipe going into the bottom of the air filter housing. It has an angled piece with holes in it I suppose to make it more quiet.
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
I don't know why'd you gut the maf... it can flow significantly more than your engine can take, in stock form.
Even with a mild cam, the ford MAF is not the bottleneck. Valves, poor shrouding, small exhaust ports, tight exhaust manifold bends, blah blah blah.
Even with a mild cam, the ford MAF is not the bottleneck. Valves, poor shrouding, small exhaust ports, tight exhaust manifold bends, blah blah blah.
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c00nhunterjoe
1994.5 - 1997 7.3L Power Stroke Diesel
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Aug 9, 2007 02:11 PM
