BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
Hi Guys,
Thought I'd share my feedback here after fitting a custom cat-back exhaust on my 645Ci, as this is information I was looking for when I bought my car.
Full cat-back system.
Overall, first impressions are great, you can definitely hear the V8 note more and at higher revs it turns into...