Originally Posted by Link7990
Just dont even bother with it buy a high flow cat instead
My cat is fine and im not doing it for more power im doing it to cut down on heat. I cant wrap it and the spot it has to be in is so tight i cant even fit a heat shield. If i ditch it and put a flanged test pipe in the heat goes down cause the pipe will not heat up as much as the cat and it will have room so my floor and tranny are not getting hot. The flanges will allow for it to be run and then come emissions time bolt it back in. A high flow cat wont be any smaller and can still throw a cat eff. Code...
Originally Posted by 650H1
it would sound and run like shit without your cat. engines need back-pressure....
The amount of back pressure that will be changed by having it out will be taken care of by the re routing of the exhaust. loosing the cat isnt going to make it much louder with the exhaust i have. Its plenty restrictive and quiet. A little louder and i will be ok. but the cats not going to make it run any worse for the reasons givin...If that much back pressure change made it run like crap then bigger piping or a header or a different muffler would also do it. Where it will run like shit is when the CEL comes on and the ecu gets a hard code for a bad cat because its gone....and thats why id liek to avoid it.
Im looking for an answer to the question...How do i avoid a CEL when removing the cat? Will an O2 spacer that pulls the O2 out of the exhaust stream solve this issue. Im not removing it cause i want power or sound im removing it due to the heat it creates in a tight space thats heatting up my transmission and my floor and anything that's sitting on the floor, Its heating up my front Driveshaft and Ujoints and causeing them to wear early or drip the grease out because its braking down in the heat.