i recently installed a vafc2 on my 01 prelude type sh and got cel code p1259 which is fuel air metering....with the vafc2 i moved my vtec down to 4500 rpm and matched the fuel and air to it so is this adjustment the cause for the code?

 

cmon guys 18 views and no one knows......installed vafc 2 and a week later air/fuel meter cel code came on...would my changing vtec engagement and vtec unmatch at 4 percent throw a code???? plz help