Quote Originally Posted by callmetree19
why should it be broken in on the dyno? i mean the dyno and street driving and close so the same right?
it's more of a question of ripping on it right away.

unless it's bone stock w/ a stock ecu then tuning it is the better way to go like has been stated before...even on a base mapped ecu. why spend all the $ building something to potentially run the risk of being too rich/lean or incorrect timing driving it easy for 500/1000/1500 miles. it's just asking for trouble. who hasn't heard of someone popping their motor before they had a chance to tune it?