1987 Nissan Hardbody Z24 Engine Starts Runs Fine Take Off Itruns Until Shifts

i have the nissan z24 engine starts runs fine take off in itruns fine until it shifts into second gear then it seems to starve for fuel and it acts like it hits a rev limitor at about 2500 rpms in park.replaced wires cap button fuel filter has 36 lbs of fuel pressure check timing fuel coming thew pressure regalator pull wire off each coil to make sure they were fireing hot batt alt charging changed computer.cam u help me in futher assitance thank you joel