I'm not sure how the secondary runners could affect the cats one way or another. I figure if it's broken, I'll try and replace the IMRC myself. Then I'll reset the PCM and take it back to the dealer to have the cats replaced. If there are any updates, I may even have them reflash the PCM.
Anyone who's changed the IMRC, how difficult is it? I've got a fair amount of mechanical knowledge, plenty of tools, and the will to give it a shot. Let me know if I'm crazy. . . :rolleyes:
Thanks,
Ben
1992 Sentra SE-R
GF's 1997 Contour SE V6
