I am kinda new to all this modification stuff and am filled with questions as i am sure all newbies are. With this new MAC Straight Shot CAI kit is the filter similiar to a K&N filter where it is re-usable and needs to be cleaned and oiled periodicly???? Can a K&N filter be used in place of the MAC filter that comes with the kit??? If you buy the kit with the MAF sensor who do you take it to to have the "tuning" done so it does'nt fill your computer with error codes??? It is a bit scary to me to have mods put on my 04 GT 40th anniv. and not know what to do about thigs like error codes or even worse the car not running right at all.....you would think that living 30 miles south of Detroit it would be easy to find out this kind of info but it has been difficult for me.....help a newbie out!!!! Thanks