|
|

The '99 Chevrolet Tahoe is a decent-running vehicle in stock trim, but its 5.7-liter V8 engine definitely has room for improvement.
|

The K&N Fuel Injection Performance Kit is all-inclusive and can be installed with hand tools by anyone who has minimal skills.
|

Pop off the stock filter cover and remove it.
|

Disconnect the mass air sensor electrical connection, the air temperature sensor and the crankcase vent hose from the factory air intake tube.
|

Take out the stock air filter. It's probably a lot dirtier than this one. Remove the factory air intake tube at the same time.
|

Take off the other half of the stock intake tube.
|

Remove the stock lower airbox assembly. Remove the lower airbox bracket.
|

Remove the factory stand-off and studs (all three of them), separate them and reinstall the studs. Install the K&N-supplied stand-offs on the studs.
|

Put the supplied neoprene gasket onto the throttle-body flange and then install the aluminum throttle-body adapter over it.
|

Use a 7/16" wrench to tighten the stand-offs, then tighten the three Allen bolts.
|

Install the silicone hose over the throttle-body adapter and tighten it with the hose clamp from the K&N kit.
|

Assemble the new heat shield with a 1/8" Allen wrench and a 3/8" socket.
|

Install the provided grommet into the small hole on the heat shield.
|

Reinstall the factory air temperature sensor into the grommet.
|

K&N provides a trim seal for the top edge of the heat shield. Work it over the edge until the seal is firmly in place.
|

You might need to trim the seal at the corners to achieve a good fit.
|

Pull apart the factory intake tube and remove the mass air sensor.
|

Remove the air temperature sensor from the factory intake tube.
|

Install the mass air adapter onto the mass air sensor and tighten the clamp on the mass air sensor side only.
|

Position the K&N intake tube into the mass air adapter and tighten the hose clamp.
|

Place the heat shield into position on the inner fender, then push the K&N intake tube onto the throttle body adapter. Tighten the hose clamps at the throttle body and the mass air adapter.
|

K&N provides a rubber pad to cover the heat shield mounting bolts' heads.
|

The kit's rubber pad prevents contact with the new K&N Filtercharger.
|

Place the Filtercharger element into the heat shield and tighten the hose clamp.
|

The C.A.R.B. exemption sticker must be visible under the hood for emissions inspections. California requires testing every two years; other states may vary.
|

The K&N Fuel Injection Performance Kit is a slick affair and really changes the underhood appearance.
|

The performance on the road is greatly improved too, with about 10 more horsepower and one mile per gallon increase on our Tahoe.
|