motor is recent rebuild. injectors were cleaned/flow tested but had been sitting for some time after cleaning, i bought them off a club member. timing and tps.. haven't checked them but i am on stock ecu and the same ecu/setup was used without this issue prior to rebuild. vacuum leaks.. pretty sure everything is hooked up right.. is there a reason that vacuum could cause this issue at only a specific rpm? the thought of injectors crossed my mind, but again, why only at this rpm. it would be great if i had more knowledge of the vac system and fuel/timing etc controls that are activated/involved at my problem rpm but im a relative novice
