My MIL keeps going on with a P code saying "low catalyst efficiency" Obviously my MILs went bad. I want to replace them because that yellow check engine light bugs. Any places where they sell cheap. I think I paid 50 for mine three years ago. Thanks

 

I have used 2 sets of the MIL elims from http://www.ponyexpressperformance.com. They are the splice in kind, but they have worked great and I have at least 40k miles on the ones on my cobra and had about 50k on my GT.

 

first make sure your connections are good before you replace. i've had the splice in kind for a while now, and had a bad connection, redid it and haven't had a problem since.