help me out..i want a chip!!!!

im not too sure how the whole chip thing works, so im gonna need you guys to help me out on this one. i was thinking of getting one and wanna know which to get, and how exactly this process works. do i just buy it and snap it in? or do i need to take it somewhere and get it tuned..please fill me in with the specifics...thanks guys
 
well ive heard that it obviously improves performance by enhancing alot of different computer controlled aspects of the car. which would lean more towards performance than the stock mustang chip. but like i said, im not to clear on the whole thing so i need someone to fill me in...
 
chips are good for people who dont want to fiddle with a hand held tuner, a custom tune is just that, weather chip or handheld, and most dealers will make minor adjustments on the chip at no charge after getting a custom tune, Probably the hand helds too.
 
Dealers will make adjustments to custom tunes they developed usually at no additional charge. One advantage of a hand held tuner is the user does not have to physically remove a chip to update their tune. They will also datalog (very useful in custom tuning) and read/erase trouble code.