MagnaFlow 2006 Porsche Cayman 3.4L 加州等級 CARB 合規 直接安裝觸媒轉換器 5411931

The mandrel-bent tubing really opens up the exhaust flow without any rattling. My Cayman’s engine note is cleaner, and the CARB compliance means I passed smog without a single issue.

Installation was straightforward since the flanges lined up perfectly with the factory mounts. The check engine light stayed off right away, which tells me the oxygen sensor readings are spot on. Feels good knowing this will pass smog without any hassle down the line.

Swapped this in over the weekend and the check engine light finally turned off after months of annoyance. The mandrel-bent tubing made installation much smoother than I expected.