Disconnect the negative battery terminal before starting this installation.
1. Remove the air intake duct, the air intake box and the air vacuum lines connected to the air box. Unbolt the air mass sensor from the air box and set aside at this point. This installation also requires removal of the front bumper and the air resonator box located in the front bumper on the driver side.
2. Take the 2 3/4” straight hose and slip it over the throttle body and use two clamps. Tighten the clamp on the throttle body at this point. (See fig. 2)
3. Remove the m6 bolts holding the bracket on the fender wall as seen in figure 3. Take the vibra-mount and screw it place. (See fig. 4)
4. Take the air mass sensor, the billet adapter and butt them together. The 4 four stock m6 x m16 bolts will screw into the billet adapter the adapter has been pretapped for easy installation. Take the 3.00” straight hose and slip it over the round end of the air mass sensor use two clamps and tighten the clamp on the air mass sensor. Press the 3” straight hose over the mouth on the adapter. (See fig. 5)
5. Take the primary intake and press it into the 2 3/4” straight hose on the throttle body be sure the 5/8” nipple on the intake is pointing in the direction of the breather line. Take the stock breather hose on the valve cover and press it over the 5/8” nipple on the primary intake. (See fig. 5)
6. The assembled air mass sensor will now be attached over the primary intake. The 3.00” straight hose will fit over the swedged end of the primary intake semi-tighten the clamp to hold the assembled unit in place. (See fig. 7)
7. Once the plastic piece over the hole that leads into the resonator box has been removed (applies to some models) take the secondary intake and slip the upper end into the 3.00” hose on the adpater the filter end will go into the resonator opening in the bumper section. (See figs. 8 and 9) Now align the bracket on the secondary intake to the vibra-mount stud and semi-tighten the m6 nut and fender washer on the vibra-mount. (See fig. 9)
8. Take the 3.00” Injen filter and slip it over the end of the secondary intake in the driver side bumper area tighten the clamp on the filter. (See fig. 10)
9. Connect the stock breather on the valve cover to the 5/8” nipple on the primary intake and fasten with the stock clamps. (See fig. 5)
10. Align the entire intake for best fit then continue to tighten all nuts, bolts and clamps. (See fig. 1)
11. Remove all tools and rags from the engine compartment, reconnect the harness to air mass sensor and reconnect the negative battery terminal before attemping to start the engine.
12. Congratulations! You have just completed the installation.
2002-04 Nissan Altima 2.5S 4 cyl. Dyno-Proven Cold Air Intake System Installation
November 19th, 2009 · No Comments
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Related Tags: air intake duct, air intake system, air mass, air vacuum, altima, battery terminal, bolts, clamp, clamps, cold air intake, cold air intake system, figs, figure 3, front bumper, m16, mass sensor, negative battery, nissan altima, throttle body, vacuum lines
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