engine rattling

[slowpoke]

got cm871 uni tune m*m**2 engine started rattling, sound's like valves or rocker's. did top end yesterday minus injectors ,don't have dial torque wrench . everything looked ok. barely any adjustment needed, 1/4 turn on set screw at most, all jake rockers steady when idling. noise starts once i hit 30 lbs of boost climbing, dropped rpms to under 15 and would almost stop the noise but lugging engine, last hour had to keep boost under 30 psi noisy pulling down to 1300 rpm. thinking might be loosing an injector. dont know what else going to plug in and try cylinder cut out test but more likely be going to dealer today , can't drive like this afraid something going to break.