-------------------------------------------------------------------------------- I just got my diablo predator in the mail today. will it trigger any check engine lights etc. problems? since its changing the stock setting?

Hey guys...so friday is payday and this is my next step...the diablo preadator!! My question is, not being a mechanic but mechanicly inclined , is this easy to use? ive read review and how to's and it seems complicated. so to all of those who have used it what do you think? thank you...