01 Type R stock everything. Car idles rough has CEL code for secondary o2, changed plugs they were carbon filled. Put new ones in and withing a week they were black again. Some one told me that the secondary o2 doesnt affect performance, so the o2 wouldnt make the car run rich and act wierd. Yesterday i started the car and it turn off within a minute, then everytime that i would try to start the car it would turn off immediately. I tried for hours to figure it out. I left it for about 2 hrs, then i tried again and after thge 4th time it turned on. Anyone knows what could be the problem?