E30 all new- won’t rev past 3-4-5k depending on CKP adjustments

[Rutech13]

I’ll throw out here what have been replaced:
4 ecu’s(all kid of numbers)
4 CKP sensors (2oem ,1hella,1chinise)
FPR (oem was good but I still put hella I believe )
3 fuel pumps...

[Rutech13]

Hi everyone.
I got 88 325e with 325i engine/harness/ecu/dash in it .
I got this car in barely running condition but after a full ending rebuild,new head was also installed .
im fighting...