Per Schroeder
Per Schroeder PowerDork
10/21/08 1:55 p.m.

We'll soon be comparing cat-back exhaust systems on our 335i Coupe. We're organizing the test now, but we expect to compare Borla, UUC, Supersprint, and others in the shoot-out. We'll be testing them on a dyno, evaluating fit and finish, and judging the sound quality.

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