I thought i would post this, I am removing my cat converter. i will post some pictures of the cat after I remove it. Because it is not ratteling but I think it is plugged.

 

hopefully you will reinstalla new oneunless you dont care about milage ,if i am not mistaken we have a O2 sensor for and aft the cat and removing the cat all together will send an open loop to the pc and make it run rich which in turn will use more fuel .
and also it wil not pass emissions testing without it

 

racin, running lean uses more fuel, running rich means too much fuel

 

how could that be possible ? running it lean will starve it for fuel therefore ,1 not run right and 2 no power
when it runs rich it will dump more fuel in like in warm up mode till the computer is told to lean it out when up too temp
thats the reason behind most ppl running a cooler thermostat so the motor is running cooler so therefore more fuel is added thinking it is still in startup mode to deliver more power

Right?

 

post cat o2 sensor does not affect the air/fuel mixture. Only pre cat does this. If anything I will get better millage as I get about 50 KM"S to a quarter of a tank which is redicolous (I calculated 8.4 mpg.)

 

My rear o2 sensor must be busted as I removed the cat and no check engine light. But as for the removing it a pain because it was welded in, but my cat converter is off and it sounds like I have an exhaust! Pretty good for just 8 bucks worth of pipe. lol

 

bad o2 sensors dont always giv u a c.e. and it duz sound like ur cat is bad with that mileage.i just replaced mineand wat an improvement! truck sounds better to

 

heh mine sounds awesome, also fixed my idle problem. It would like almost die at times but is fine now.

 

if the computer is thinking the mixture is too lean then it will start dumping fuel and if it is too rich it will restrict the fuel amount

 

i realy think ur gna want a simulator...but see what ya get for mpg...