I tripped a catalyst system efficiency code and I'm thinking its the cats. I'm gonna test idle voltage and the o2s tomorrow but I think it may be time for some dynatechs, what generally pulls that code on these trucks?

 

catalyst efficiency codes are 90% of the time set due to poor preforming convertors...looks like it may be time to upgrade

 

It only does it randomly, didn't throw any today. I'm gonna transfer the magnaflow y-pipe in from my work and see how it does, $160 for maggy high flows is cheaper than the $1100 for dynatechs.