ok everyone i have a problem anwyays i drive a 2000 civic si with a jdm b16a block and head.. i have recently had a problem were i rev my motor past 5500 and around 5700 sometimes around 6500+ my vtec sounds nice and loud but it seems like it wants to stop working and the car loses power as im still flooring it kinda like if it was to missifre while in vtec any ideas? and car runs perfect when not in vtec cel on is 02 sensors and crank sensors but the car ran fine before with these same codes? thanks

 

Fix the CEL.