Mark and remove
Mark both ends of the compressor outlet hose for orientation. Loosen its two 7 mm clamps. Remove the outlet-pipe T30 screw, move the pipe enough to withdraw the hose, then remove the muffler’s three 5 mm hex screws. Retain the factory O-ring.
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Install the sealing pieces
Position the supplied large seal in the muffler housing. A little silicone O-ring grease can hold it. Refit the factory O-ring and APR outer ring with the original screws; ensure the O-ring is not pinched. Apply supplied threadlocker to the center-section threads, screw it into the outer ring, and firmly hand-tighten so it compresses the supplied seal.
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Restore the plumbing
Refit the compressor hose to the orientation marks and tighten both clamps. Reinstall the outlet-pipe T30 screw. Refit the intake hose and its spring clamp, then secure the turbo-inlet clamp.
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Products in this guide
Sources / references 1
- APR installation instructions ↗Reviewed Oct 8, 2026
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