Just had a really good qoute for a cat back system on my 2004 3.0l Z4. £325 including all the extra bits. The thing is this, is it a good idea and will it affect the performance in a good or bad way? I am considering the mid sports model. Not too quiet but not too loud apparently. I would really like to hear from anyone who has had this done. Thanks very much!
Mid sports Cat Back system on my 3.0i???
- Thread starter AndyG
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