Hey guys I have a 07 GT with a C&L intake and Brenspeed tune. I was wondering if it is extremely important that I follow the scheduled maintenance aside from oil changes obviously. While taking the intake out isn't a huge deal I was just wondering which maintenance services are absolutely necessary? I know my dealer will try to void it because the only thing they were cool with was my Borla axle back and they said unless I used the Ford Power Pack I would void my warranty.