I just recently put a magnaflow muffler dumped right before the axle...Its really quiet. Since my truck has 4 cats, could I replace the back cats without a cel popping up? What are some decent cats that won't break the bank?

 

Yes you can, 2004 & 2005 model trucks rear converters are not O2 monitored. You could delete them and replace with piping if you wanted ( just dont if you have emissions or strict inspections ) without a CEL coming on.

 

gut all 4 and replace with 2 high flows. what size magnaflow did you put on?

 

I think i'll just delete the back two cats. We don't have emission inspections here in kansas (yet)..I installed a 14"x4"x8"? offset 2.5"

 

so run 4 gutted OEMs, then replace something with two hi-flows?








and sweet, my 8,000th post, and my truck is about to turn to its 80,000th mile.