Running Power Plus 520's
http://www.kermatdi.com/servlet/-str...LUS-520/Detail
on advice from TDI club. Apparently they have the best spray pattern. It has also been theorized that larger nozzles inject more fuel closer to the optimal timing point, and therefore have better economy. Regardless the car is quitter at speed, pulls smoother, and lets face it Torque is fun from time to time.
Most see some fe gain from the pp520's some see no change, some see losses.