Cetane Boost
Just thought I would add my experience. I have a 2004 TDI (BHW) with a RC2 tune I did in May of 2006. After about a month of driving I noticed when I applied power I could feel a slight miss. As I usually do, I thought the worst. I though bad injectors, tranny vibrations, Torque Converter problems etc. Then for the heck of it I tried some Power Service Diesel Kleen Cetane Boost. It was like having my car reprogrammed all over again. It was amazing that it was just crappy fuel. I am sure the fact that my car has a higher then stock boost exacerbated the problem. But we really do have some lousy diesel in this country (40 cetane in US over 50 in europe)! Jon