[SRTDan]

I need to somehow reflash my srt so it knows the parts ive put on it and so i can get rid of an overboost code i have been throwin. what would be the cheapest and easiest way to do that. could a shop tune it for cheap??? or would it be more worth it to buy something to tune it myself??? and if so what is the best product to buy so i can tune my car by myself??? the peson who had my car before me put in a stage one so i know it has already been reflashed before or the ecu was changed.