okay i got a little problem guys. My car keeps bogging, so i checked my msd wires to see if they are connected or not since they like to get loose sometimes and everything was cool. I pulled the plugs out and they are black, im going to replace them once i get off work but im not sure this will help. Seems like ive been wasting a lot of gas lately and it just started to bog. My car is daily driven and has been driven open header for a quite a while now. Could running open header cause the o2 sensor to go bad and make me run rich? i tried reseting the ecu but no luck. Any suggestions? ohh yea its a 98 dx hatchback with b18c with IM, intake, and fuel pump. Your help is appriciated.

 

are you burning a little oil? cause if yes your O2 censor could very well be the problem