hi to all sifu pls help.i jz overhoul my engine n change adj cam pulley,sk2 intake,s90 tb,b18cr piston.i am using b18c block head is b16a.running about 1000km already n today i want to teat in high rpm.but at gear3 rmp is about 7000 check engine light in on.when i stop the car n start the car again is ok.so any sifu got idea what wrong with my engine pls help.... thanks.