AC DC just collects dust since the update. Really don't miss it one bit. A blown piston happens when you have enough pop hits to light all three yellow lights solid at the entry of fuel lane. Hit the standup at the end and you blow a piston.
It is also lucrative to end a series of combos with the fuel lane. Have gotten 2.5M but not really sure what gets it that high. Can't imagine Met any better but the band modes will just be icing on one sweet cake.