Turbo ZHP Convertible
I have a 04 330Cic with 117000. It is a ZHP, vert, driven with top always down, and i push it decently hard. So i get around 15.7 MPG. 91 Octane Fuel. Suddenly it has dropped to 14.4 and i can smell an odd burning smell at high revs from the front. CCV? I also seem to be burning a bit more oil than standard.