i have put shorty headers on my cpe , and now it seems to like to throw the p0410 secondary air system code. the pump is working. i pulled the hose loose and it pumps. the check valve seemed to be working last week when i had it off and blew thru it. worked one direction, would not allow air the other. the 02 are in and pluged in correctly. it took 2 days and about 75 mils to throw the code the first time. i reset it. now 6 days and about 100 miles later bling...... check engine light and the same p0410 code. it is the only code. so for some reason this computer thinks no air is going to both sides of the exhaust. what is going on here???:bang :huh: i have checked all the hoses, they are on. i have checked the pump, it works, i have checked the valve, worked a week ago when i had it off. the only thing these headers do is flow better than the stk. could this be causing the freak out with both sides not showing correct amount of air? any help would be appreciated!!!