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High-flow cats aren't harmful at all.
However, sometimes they DO blow out far faster than a regular cat since there is less material to hold themeselves in. THAT can be harmful.
True duals are a pain on these trucks since you have 2 02 sensors.
Have fun getting around that.
Okay that is a relief. lol And yes, I know what you mean about the o2 sensors. That will be a pain in the rear. LOL
Well I can guarantee there are plenty of people that run true duel exhaust on these Rams, so it can't be too hard to figure out.
It seems that most often when we hear about them here, some ignorant hillbilly previous owner has just cut the oxygen sensors right out of the system and the current owner is trying to figure out why his truck runs like crap.
A California emissions truck makes it easy. The rest make it stupid.