1. Disconnect your mass air flow sensor. Take a screwdriver and loosen the clamp that supports the air intake tube to the throttle body.

2. Disconnect the 3/4 air pump hose from your stock air box. The only supports now are rubber holders in which as you lift the complete assembly will separate. Take the complete assembly, airbox, mass air and intake tube and place it on the table.

3. You now need to separate the air box from the mass air flow sensor. On the front of the mass air flow sensor you should find a clamp, position a screwdriver in the clamp and pry it open. Separate the mass air flow sensor from the air box.

4. You have your choice to modify your shroud on the car or to remove the shroud then modify it. ( On the car is the easier way and if you ever want to return it to stock GM carries replacement shrouds for between $49.00 and $59.00)If you wish to remove the shroud you have to remove 7 screws on the bottom that support the shroud and 2 on each side of the radiator support plastic beam. The shroud can then be removed from the top. Take the template provided and position it in the center of the shroud, the bottom part fits in the shrouds ridge. PIC 1 Mark the center section to cut with a pencil. Take a dremel or utility knife and cut the opening for the rammer. At this point place the Vortex Rammer in the shroud and mark the supporting holes for the rammer. Remove the rammer and use a 3/8 drill bit or utility knife to cut into the marked holes. TIP: Slot the hole up and down for ease in install. Take the U-Clips provided and position them into the holes nipple side down.

5. Take the shroud and install it back into your vehicle. Take the 1/2 foam provided and position it over the section of the shroud (Top of the shroud, closest to the engine) where the crevice is. You should now have an equal height around the square opening. PIC 2. Take your Vortex Rammer and mount it onto your Mass air flow sensor. Mount the intake air tube with the rammer and all back on to your throttle body. Position the scoop onto the shroud and then place the rammer box on top of it. Take your screws provided and screw them into the U-Clips you had installed.Tighten all the clamps. PIC 3,4, & 5

6. Reconnect your Mass Air Flow sensor.

7. Take the small air pump filter provided with the kit and insert it into the 3/4 air pump hose down by the air box. Mark a spot on the shroud to mount the tab that holds the air pump hose. Drill a 1/4 hole and push the special tab provided through the hole from underneath, at this point pass the tie strap through the tab and around the 3/4 air pump hose.(This filter does not get inserted into the air box, but gets strapped next to it to intake warm air )