i have an 03 ranger 4.0 it has 4 cat converters 1 off each header then 2 in a row right before the muffler if i take those two off will i shoot any codes and if so can i just reflash it to make the engine light go off it has a thrush muffler but i want it a little louder

 

Don't mess with the cats at all they are already high flow and you will not see any gain.

 

you can take the one off after the down stream o2 sensor but not the ones b4 the sensor

 

Correct. Remove the last cat as long as it is AFTER your last 02 sensor.

I removed both of my cat's and installed one magnaflow highflow cat and had no issue after adding a de-fouler to the after cat 02 sensor. You can probably remove all your cats if you are going to run a de-fouler.

 

ok sweet does taking the one off affect the sound any

 

it will bareley mak it any louder honestly i would just get an aftermarket cat if you want louder


Or you could just cut the pipe after your last o2 sensor lol j/k

 

no dont mess with anything. No gain at all, sounds won't make a difference either

 

putting on the single Magnaflow high flow made a HUGE difference in sound output.

Do it if you want it to be loud. Just removing the 5th cat wont do alot. Removing them all WILL.

 

how much is a high flow cat? and where do most people put it?

 

it replaces ALL your cats. Gotta have an exhaust shop fab it up if you cant. It will replace your Y pipe

 

Hey guys,

I have an '09 2.3 with California emissions
Is there an advantage to changing to 49 state cat?
The rig lives in WA now, wondered if the change would gain any hp or tq
Also thinking of removing the 2nd cat, no testing done here.

Thanks for any help
Richard

 

Save your money . Rangers come stock with high flow cats so you won't see any difference.
If you need more rear wheel hp or tq re-gear the rear end .

 

will it be a nice throaty sound or just a loud bunch of noise that sounds bad? any video we could see of this? thanks

 

Thanks for the info,
It has 4:10's now
The plan is to upgrade the stock to 2 1/4" stainless steel Flowmaster resonator & 50 series deltaflow + a Magnaflow rear pipe
Also considering a MSDS ceramic coated header for reduced #'s & underhood heat, quicker cat light off and maybe a few more hp & tq