i have a 2006 dodge ram 1500 with 3'' magnaflow exhaust and i want to replace the converters with just stright pipe will this mess anything up? do i need to have the converters on count of the 02 senors will the truck still runn right ?
thanks derrick

 

Its always a good idea to keep them on from what i've learned. I cut mine off for a week and ended up having to put them back on. One of my Downstream oxygen sensors went bad on the third day. I even had Sparkplug non foulers installed which worked up until the sensor went bad. I continued to drive it for the rest of the week and ended up getting like 12 mpg on the hwy where i usually get 18. The exhaust was just a little louder not much though. Also I could not feel a gain in performance. Put them back on and havent had any problems yet. While they were off i looked inside them and they looked clean at 52,000 miles.

 

I have the 3" magnaflow on mine with the converters intact and have no issuse with the o2 sensors, my friends 5.7 he removed them and had nothing but problems till he put them back on, so I will leave mine on

 

Leave them on. They are already high flow converters from the factory. Nothing to gain except stinking exhaust and probably a small loss of torque.

 

These are not your father's cats. They flow night and day better than the cats of the '70s and '80s. I did long tube headers and left the stock cats in, although moved back a bit to allow for the headers and I'm not even in an inspection state...

 

You know how I feel about cats..........

 

Out of curiousity, which long tube headers do you have?

To the OP - personally, I'd keep the cats. I don't know how Canada is about emissions testing but here in the US, they seem inclined to become more stringent in the future.

 

i have pacesetter long tube headers with their y pipe and i ran with no cats for about 2 months. I got sick of check engine light and decided to have some high flows put on and since then no problems with check engine light. i do have more drone in the cab, but as far as sound when i get on it sounds the same to me.

 

So how's the performance with the LT's?

I live in a test area so I HAVE to have cats. I have read on a Honda forum about some ways of "tricking" the oxygen sensor but that wouldn't help me when they hold the mirror under the truck during the e-test. They want to see cats under there, and I don't mean the furry kind. Frankly, if the cats flow good, I don't see any reason to eliminate them unless you're doing big-time engine mods.

 

I've got the Pacesetters, with a custom ceramic coat applied by a local coatings shop.

You could use the non-fouler trick (I have a DIY in the FAQ) but you'd obviously fail visual...