welcome to Xoutpost!

I went with magnaflow part #10415 and I'm loving the sound. I got custom tail pipes from magnaflow (which are now for sale on the for sale section of this forum) because i switched to 4.6 tips.
You can hear how they sound here: http://www.xoutpost.com/bmw-sav-foru...st-system.html

You can get 22 BMW reps from eBay or lake shore wheel:Wheels for BMW X5 on Special! Wheels X5,rims X5,chrome Wheels X5, wheels,rims bmw

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