Originally Posted by Jeff@topgearsolutions
If they are brand new with less then 100 miles they will burn off some stuff.
Most people don't wipe down the pipes after install but they should as hands get greasy and sometimes there is an oily residue on exhaust components from the manufacturing process.
would that make the car smoke or smell like oil burning? i am worried it may be turbo seals or oil dripping from the valve gaskets...
2009 135i 6AT
E40 PTF Protune, AR Dp's, 5" ETS FMIC, BMS DCI, M3 RSFB's, Koni Yellow Shocks, Michelin PSS