i have a PR3-1 head is that a b16 1st gen or which gen..i was curious on that, also i know its the injectors there ticking really loud now when i open the hood n crack the throttle i can hear them distinctively, i am gonna probably go with RC engineering 310cc injectors but i have no idea where to get the obd2 plug adapters, which im not sure if i need bc i am runnign a p73 itr ecu obd2, but my intake manifold is a p30 from a b16 if you guys could clear this up this would be great?