Bosio Race 520s are among the heaviest fueling nozzles offered for Rotary Pump TDIs. They fuel substantially more than Power Plus 764s.
These nozzles are generally considered too big to use in an otherwise stock TDI: Upgraded turbo, breathing, intercooling, and, of course, tuning should be considered required to get the best results and manageable smoke levels with these nozzles. They may not be the best choice with our VNT 17/22: PP764s or PP502s may work better.
Includes injector seals.