I'am new to cat from Poo, bought a 09 M8 with BD box, timbersled clean air intake, y pipe, D&D pipe and a MBRP can, I'm not sure why they mixed the pipe and can but I read the manual for the BD box and it looks quite involved. I dont want to take a chance on burning down the motor. Can I just remove the box or do I need it with the other add ons. I dont have the money to swap the box and buy the other one, I think its the attitude. Thanks for any input!!!!!!!