r33 rpm (engine)

i have r33 gtst (inter cooler,pod filter,3") the problem is after i rev it to about 7000 the engine tries to stop, the rpm meter just goes to 100 and comes back to 1000, does anyone onr know why

probably cause you valve bounced and the factory ecu dosent let it rev past 7000rpm. i wouldnt reccomend revving that high to any engine if the car isnt in motion lol