Reviewed By Alfred K (Atco, NJ) Reviewed for a 2005 Audi A4 —7/20/2013 6:36 AM
The product was made for the cat. It look,feel and performed as described Highly recommend.
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Reviewed By David K (Cerritos, CA) Reviewed for a 2005 Audi A4 —4/15/2008 3:36 AM
There isn't a noticeable boost in hp or torque, but it's just good to know that it won't be necessary to buy filters anymore. For this it's totally worth it. Buy from here - the lowest price you'll find anywhere!