hey guys what can i do whith it, should i just take it off and put a same size pipe or something else????

 

nice spelling Yeah, just replace it with piping that matchs the rest of the system for more power.

 

What do you do with the 2 oxygen sensors on the CAT? How much power will i expect if I run straight pipes on my S2K. Ive been thinking about running straight pipes for a while, I also dont want the check engine light to be on either. Those damn things are annoying as hell.

 

run them in the straight pipe, they sell ones with bungs for them. (or u can get it customed (racingpipes.com)