i just put a b20 swap in my 00 ek (ex) and it wont rev past 5k and sometimes when you try to start it it acts like the batt is dead but the voltage is good. it still has the ex ecu. the motor dose not have a crank position sensor but i jumped that out accorrding to another site and no cel for that anymore but vtec code is still there now has alot of unknown codes. any help would be very helpful

 

you need the ecu for the b20

 

Ok I hear you bout the ecu but would that have any thing to do with the car actin like the batt is dead? Took the starter off and had it tested the auto parts store said it was bad so I got a new one gonna try this and see if it works