ECU Question

Hi everyone, I have a question, I own a Civic HX 97 and I recently swapped to a B16A engine, but I didn't get the B16 ECU so I'm using the stock P2N ECU, I'm realizing that this ecu engages the vtec at 3500 RPM can this be a problem to use this ECU with my B16 engine?

well it shouldnt affect your motor too bad, although it may be sending too much, or too little fuel/air mix into your motor, id suggest to go out and get an ecu from the b16a.