The phrase "different tune" means changing one's opinion or attitude about something. It refers to a change in perspective or viewpoint. Full definition
This makes for a total of 550 hp from the 3.8 - liter twin - turbo V - 6 engine thanks to slightly different tuning of the engine electronics. (automobilemag.com)
You can even select different tunes for the two different doors, so you'll know where someone has arrived. (geekwrapped.com)
Both the engines are offered with an 8 - speed automatic transmission, albeit with different tuning. (cardekho.com)