I am having an issue with a recently swapped 88 si with a jdm b16a car runs great but will not go into vtec. It feels like the motor is being choked up, (not to be confused with misfiring) around 5-6k but will rev fine in neutral but in gear it chokes. It seems as if the when going past 5k the motor starts to loose power, no bucking, misfiring just simply as if you are about to hit redline or floating if you will. Possibly fuel or ignition issue?????