just got my x-mas bonus and i'm ready to spend it! i've been thinking about a piggyback system. but in all honesty i really know NOTHING about them except that they bring some pretty decent power gains by tapping into the cars ecu and changing settings like air fuel ratio, boost (if turbo'ed), timing, and scent of your air freshener etc. any real tuners here cuz i'd like to know what i'm getting myself into. and if anyone in the houston area knows of a shop that can tune these things that'd be helpful too