ok i been working on this for about a week now since i got my exhaust cutouts put on. heres the story. i had the muffler shop fab me up a pipe that shoots straight down from the manifold collector and onto the ground. on that opening i put my cutout plates. i had him round out this pipe so when the down pipes are closed, the gases flow through the stock exhaust. this was fine with the drivers side as the o2 sensor was about 3 inches below the collector. i had him move the passenger sensor to the same location on the other bank so it looks the same. nicely done and all. but now after a few miles of driving i get a service engine soon light. drives me crazy. i found out that it happens with the cutouts open and closed so i'm stumped. i thought it may be my opti but then i found that i'm blowing o2 sensor fuses. dunno why. car runs fine but stupid light comes on untill the fuse blows. so i have a few questions and anyone who can answer any of these please chime in. is it ok for me to have moved my o2 sensor? why are my o2 sensor fuses blowing out? how can i fix it? i really need to get this worked out cause i have a trip planned in the vette soon and need her running well. thanks guys and you'll never know what it means to me to have yall to help me out. :seeya