i just did a jdm h22a swap on my car bout a month ago and every time i hit vtec after like two three times it throws a check engine light also i have an automatic my vtec kicks on at 5200rpm and shifts at 6700rpm isnt vtec shifting a little and if it is wat could be the problem any help would be much appreciated

 

what code does it throw.. 21 or 22 are vtec problems... check your grounds if it throws 22 really all i can say not knowing wht code its throwing.. its shifting at 6700 cause its going into limp mode... clear the code... redline comes back