Between the Fitch Fuel catalyst, the FASS system and the FS2000? Do their functions overlap or can they be used together?
I'm not a expert on this but I think this is right. The fuel catalist changes the molecular structure of the fuel to make it burn better. the Fs2000 is a add on fuel filter much like the nicktane filter. I think the fass system is a fuel pump. so they could all be used together if you like to spend lots of money.