i had the trifecta budget tune but upgraded it last spring. both tunes installed and performed flawlessly, however communication from trifecta is somewhat lacking. i paid for the upgraded tune and 2 weeks later they hadn't posted it. i emailed them and the tune showed up in my account the next day. i never received a reply or explanation. that suits my current needs, but i don't think i would use them for a more sensitive tune, just because of the communication lag (or lack).