Ha.. shelf tune over street tune... Funny.. Shelf tune is generic tune made based on other scans of peoples cars (probably on a street in many cases)...
I would bet on many dyno tunes being a shelf tune with the engine run at its max output to tune the highest output of the engine only.. I doubt they spend all that much time tuning anything less then WOT. Unless you have a car only driven at a race track, I doubt you spend all that much time at WOT.
@Op.. Depends on what has been changed in the PCM already.. If it was a true stock PCM, I wouldnt use it with a 3.4 pulley..
