Great stuff. Very high quality construction. Sounds fantastic on my 2001 BMW 330xi. Just make sure you do it in a good deal or they might mess things up. Is this stainless steel. Very nice powder coating. Using standard coils and resonators, it produces fantastic sound and no internal hum. If you are buying this for a BMW you are getting THIS model with the 3" intake and not the 2.5" intake as that would be too restrictive, especially for a 3.0 liter. Make sure you give this thing about 300 miles to "work" as the sound has improved a lot since it was first installed.
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