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996 Turbo Air filter replacement

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Can anyone please post a diagram on how to replace the air filter on a 996 turbo, i know there is one on the gt3 but the location is different on the turbo. I wanted to know if the hose to the left inter cooler needed to be removed in order to get the air box our? Thanks everyone

Edited by moosey
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1. Pull off hot film mass air flow sensor. Push the plug downwards and press the grooved surface at the sides. Pull the plug up and off at the same time.

2. Pull off the connecting hose between the left turbocharger and the intake pipe. Unclip the retaining clips using a screwdriver and pull out the hose. Refit the retaining clips immediately.

3. Undo hose clamp. Undo the hose clamp −arrow− between the air cleaner housing and the intake pipe.

4. Remove air cleaner housing. Unscrew the fastening screw M6 x 34 at the rear of the air cleaner housing.

5. Tilt air cleaner housing outwards. Tilt the housing upwards and to the right by 90° and then turn the housing to the left by approx. 90°.

6. Unclip the hot film mass air flow meter cable.

a. Open the omega clip on the left side of the air cleaner housing and take out the cable.

b. Take the air cleaner housing out of the engine compartment.

7. Open air cleaner housing. To do this, open the screws −arrows− and pull the two housing halves apart.

8. Take out the cleaner element.

c. Take out the air cleaner element.

d. Wipe out the two housing halves with a cloth.


1. Insert filter element.

a. Insert the filter element into the cleaned air cleaner housing.

b. Retighten the two air cleaner housing halves with the screws.

2. Clip in hot film mass air flow sensor cable. Insert the cable into the omega clip on the left air cleaner housing side and then close the clip.

3. Place the air cleaner housing in the engine compartment as shown and move into installation position.

c. Turn the housing to the right by approx. 90° and push the rubber hose over the flange.

d. Swivel the housing downwards by 90°.

4. Tighten the fastening screw M6 x 34.

Tightening torque: 10 Nm (7.5 ftlb.)

5. Tighten the hose clamp on the connecting hose. Reconnect the plug on the hot film mass air flow sensor.

Note - The plug must engage audibly!

6. Attach the connecting hose between the left turbocharger and the intake distributor.

Note - The hose must engage audibly!

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  • 4 weeks later...
  • 9 months later...

From all I've read, you should have left the stock one in. With all the contradictory information about CELs, the affect on the MAFs and other issues, I don't think the trouble or extra expense is going to bring you much performance that you didn't already have in the stock one. Admittedly this is a Personal opinion but based upon different threads Ive read on the subject.

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