The RD2-HPNA Injection pump is a performance based model for Non-Turbocharged Trucks. The HPNA provides a near flat fueling curve of 70cc across the board. With a De-Fuel at 3800 RPM, the RD2-HPNA has extra ceiling over a the 3400 RPM De-Fuel of the stock pump.
-Slight fueling boost for non-turbocharged trucks.
-Can be adjusted into the RD2-80 calibration for future turbocharged applications.
* Pyrometer highly recommended.