hi i am new to this site and need help. ihave 05 3500 auto engine went low compression changed engine new engine has 39000km. have p0088 and 0251 codes. truck has been to two diffrent dodge dealers. they changed fac and rail pressure sensor no change. there scan tool says their is 27000 pounds fuel pressure at idle.they changed injection pump put one on off my old engine ran alittle better but still no power and sounds like 2gen diesel.if you feather throttle you con get a little power up to about 120 km 2000rpm once you give more throttle you go nowhere. this has been going on for 3months costs lots of money and still not driving truck. they also tried another ecm and no change. also if you give full throttle at 100km trans will kick down rev to 3000rpm gain very little speed and wont shift untill let up on throttle.