Just thought of something else. If you are looking to increase performance and get a louder sounding exhaust---

Assuming you need to replace a cat(s), and you have the budget and likely can wait a few days as they won't be in stock, consider a low restriction cat. It would be necessary to replace both sides. You need to be careful that they will still pass any emissions test there but--just something you should know.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas