replaced maf which was supposidly bad still hesitating and backfireing sounds like neer the intake the car shudders when i disconnect the maf and drive it doesnt do it as bad but when i plug it in and drive it hesiates like crazy i cant go more than 15 mph up hill it sucks there is no maf relay on my car so this brings me to could it be my iac my throttle position sensor or my ignition control moduel what are all the possibilitys

I left you a reply on your other post regarding the same topic. Check your plugs and wires. Backfiring is a result of gas being ignited when it should not be. Your ignition system is the most logical place to start.