Built-F-150

Now how do you gut these? as in do you just unbolt them, gut them, then bolt them back on? and how easy of a task is this because ive been wanting to do the same just havnt really known how... i actually baught o2 cheaters, they just plug into the harneses and trick the computer, no messing with fake cats or anything else, just not sure how to do the rest...

DrakeGuy22

i simply put it into simple terms that anyone could understand. check out the site read what they are then get back to me. i know what an o2 sensor is and does thank you for telling me anyway. if you wanna spend the money on a "high flow cat" be my guest. id rather spend my money on more important things

DrakeGuy22

Just unbolt them wherever you can, take em out and use something like a broom handle to smash em out. just make sure you put a block of wood or something on the floor so you dont ruin the end of the pipe. the inside is like a really really thick screen, and it take a little bit to get it all out, but make sure you get all of it so i doesnt end up clogging your muffler

streetassasin

Neither of my old camaros had cats and anyone who rode in them get out smelling like exhaust

heathmeador

why do people not listen to the ones that are training for the field and know what there talkin bout?? oh well dont take my professional advice.

DrakeGuy22

because some people either had something happen to them or heard someone say it and they believed it.... simple minded.... i agree with you 100%

jimmygreen12

I'm planning on doing that same thing. But instead of coming out of the cats, I was considering removing the cats altogether and running 2 pipes straight from the headers to a pair of mufflers, each with an electric cutout just for fun.

ATM

Don't,
Son did this a few yrs ago and screwed up the gas mileage, and all related emission controls on his truck. He strted down the road to bypass all of the sensors but ended up trading it in and lost his butt.

JCP281

LOL the cats were not the issue man. I dont understand where all this misinformation comes from on the net. There is ZERO purpose for the cats as far as your vehicles computer is concerned, it couldnt care less if they are there or not. Removing them will not decrease gas mileage or cause your truck to run bad.

The only thing you need to do is turn your rear o2's off so you dont have the stupid CEL for malfunctioning cats(which does not alter the computer in any way, it is just annoying having the light on).

Like I said a few months ago, just because you drive a truck does not make it some special wonder as far as vehicles are concerned. The car enthusiast community has been using off road midpipes for decades, and there cars arnt all messed up and getting horrible gas mileage. So, why would it be any different for a truck...

racin4ds

iTrader: (1)

Cats aren't useless!! They are there to help emissions!! I agree, we don't need four of the damn things but you should at least have one on each bank to help with your emissions output, and almost no state will inspect your vehicle if they see the cats completely missing!

If you want to remove the two rearmost cats, thats fine, it shouldn't affect the 02 sensors and throw a code at all. But please leave the front two cats alone. I don't wanna sound like some tree hugger or anything, but its there for a reason and you may find yourself having a real hard time with inspections without them..

And you simply can't just "turn off" the rear 02 sensors anymore there JCP... its illegal as hell and no tuner can do it that I'm aware of.