Originally Posted by Mrg0ped

Just put in a JDM D15B and cant get the vtec to work,I have a p28 Auto ecu but its on a 5 speed any ideas????

I cleaned the screen on the vtec solenoid already.
If we give the solenoid power while the car is just sitting there idling it shuts down,also if i rev the car up it starts to break up around 5000 rpms.we tried giving the solenoid power at that rpm point and it seemed to run like crap started breaking up real bad.

What else tells the computer to let the vtec work or not?