Hi all in need of BMW help

[Frany]

Hi all i own a 1981 bmw 520i E12 had it fully restored and started moddind the m20b20 moter. ive put on a e30 325i intake manifold and injectors 60-2 crank pulley and sensor higher compreshion pistons and stand alone engine managment system with split seqential fueling, locked distributer. When i try start the car the moter turns very slowly and i dont get a puls from the sensor. put in a new batry same prob. car can be run started. if started i have a huge blind spot from 1/4 throttel to full throttel. only at full tilt does the car start pulling and only if im @ 2800rpm and above. The rpm needle also shows half the rpm of what it is supose to in the blind spot. any help plz

[Frany]

sorted the starting problem was the starter that was shot replaced it. but stil have the misfire when reving problem