Hi, everyone i just put a j-spec into my s4 and the injecotrs that came with the j-spec wont open. I know that the comp is good along with the afm and the injectors open when i apply 12 volts. I have been starting to bypass some stuff trying to go directly from the ecu and battery and stuff will that makethem not run or what is going on i am lost some one help please.
Thanks Ryan

 

Are you sure your fuel pump is working properly?