I have searched but i did not find exactly what i wanted. Can you take the cats off of an ls and not throw any codes. Im wanting a cheap way to let the engine breath a little more and maybe pick up some mpg's. I can do it myself i just want to make sure its not going to screw anything up. Its an 05 ls v8. I plan on adding magnaflows also. Keeping the rest of the exhaust stock though for money and bang for the buck reasons. Thanks.