I have one small question would gutting out the cat have any effect on the car, harm wize. I did it to mine my check engine light was on for a few days after that it just went away. And I left the O2 senor in place. Right now I'm running allmotor but I have my direct port getting ready to be hooked up in a few days. On motor the car feel semi slugish off the line but after 3k it pins u back more then it did with the cat not gutted. Could the slugishness be because I don't have much back pressure? Do u guys think I should go a race cat or would no cat run better when on spray.

One other thing I thought my car was loud with the Y-pipe and B-pipe and stock muffler, Now it sounds like beast....alittle to loud.

Rich