Step-by-Step Instructions for Attaching MAF Sensor Bung to Tube

Step 1: Establish Position

• Place masking tape on the tube, covering the area where the MAF Sensor Bung will be positioned.
• Overlap the tape to protect the surrounding area.

Step 2: Mark Perimeter and Opening

• Mark the perimeter and the rectangular opening of the MAF Sensor Bung onto the tape using a pen.

Step 3: Drill Holes and Rough Cut

• Remove the MAF Sensor Bung from the tube.
• Drill holes about 7/16" in diameter at either end of the rectangular opening.
• Roughly cut the length of the rectangular opening using a Dremel or small diameter cut-off wheel.

Step 4: File and Sand

• File the opening to its final size with a file (slightly larger than the opening).
• Sand the edge smooth with 320 grit sandpaper.
• Cut the masking tape just inside the perimeter line with an X-acto knife.

Step 5: Prepare for Adhesive

• Sand the area inside the perimeter and the underside of the boss with 60 grit sandpaper to provide adhesive grip.

Step 6: Apply Adhesive

• Use an industrial adhesive like Panel Bond.
• Apply the adhesive to the underside of the boss.
• Press the MAF Sensor Bung into place, paying attention to the arrow indicating airflow direction.
• Wipe off any excess glue that squeezes out.

Step 7: Secure Boss in Place

• Hold the MAF Sensor Bung in place with tape until the adhesive significantly sets.

Note: Do not use nuts or other hardware on the inside of the tube to avoid the risk of them coming loose and getting drawn into the engine.