---------- ENGINE / TRANSMISSION: FILTER, INTAKE, MASS AIR FLOW SENSOR, THROTTLE BODY ---------
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K/N Panel Filter (Removed for PR CAI Install)

Purchased from AJ-USA
$47.93 (Including Service Kit)(Free Shipping)
Install - December, 2002


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Place Racing Cold Air Intake

Purchaced from Cattman Performance
$141.00 (Free Shipping)
Group Deal from Maxima.org
Install - December, 2004
Stock Air Box

Removed Air Box & Battery

Right After Cutting Hole

Hole With Rubber Guard Attached.
Assembly and Adjustment



Late Night Modding


Finished Product



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K/N Cone Filter
Purchased from Cattman Performance
$38.00 (Shipping Included)
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Early Model 2003 MAF Sensor
Part #22680-AM600

Purchased from Southpoint Nissan
Austin, TX
$408.80 (Shipping Included)
Installed April, 2005
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Mass Air Flow Sensor Project
The stock 2k2 Maxima MAF Sensor housing is 70mm in diameter and consists of the housing, the sensor and the flow straightening screen. After having my original sensor die, I wanted to bore out the housing to 72.5mm (the same that I am wanting to bore out my throttle body to). The only problem is that the material is a very brittle composite/plastic, and will be difficult to hold in a lathe. I am planning on getting our resident machinist to try his best at boring it out to 72.5mm where I can swap my good sensor into it. Another problem is the screen opening is only 70mm in diameter. I measured the wire diameter and opening size, and think I have found a suitable stainless steel replacement mesh from McMaster Carr Supply. Next hurdle is finding a way of holding the mesh (a ring or something). Our machinist also mentioned that making a new housing out of billet aluminum would be pretty easy, so I am working on a design for a 3" housing (76.2mm).
Below: SolidWorks design of the 70mm Stock MAF Housing

Below: SolidWorks design of the 72.5mm bored out MAF Housing

Below: The 70mm Screen

Below: O-Ring and Torx Screws

Below: MAF Sensor


Below: 70mm MAF Housing


Below: Big Bore MAF Housing Design (w/o flange)

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Throttle Body Project
Below: Throttle Body before disassebmly


Below: Throttle Body with Butterfly Removed

Below: Throttle Position Sensor Removed

Below: Internal Gearing

Below: Gears Removed then Springs Removed

Below: All Part Removed (Except Shaft and Bearings)

Below: Springs, Gears, and Motor

Below: Motor and SolidWorks designed 70mm Butterfly

Below: SolidWorks designed 70mm Throttle body Throat and Shaft

Below: Representative Assembly for 70mm Throttlebody

Below: First Attempt at Redrawing 70mm TB (without having it in hand)

Below: More accurate model
