Edge EZ, drop-in filter, MBRP, and FASS-pump only, 13 psi, very steady. New VP44, 14K miles past. Starts readily, idles well. Very low on power, jerky, occasionally will power-up properly and pull well, with normal boost. Will eventually run up RPM's but takes awhile. No abnormal smoke. Actron OBD shows no codes, but I realize this may not be definiti9ve for this scanner and truck. Any advice would be appreciated. Thanks.