why am I loose power at 30 mph on an incline?

Hello, loss of power and having to manipulate the accelerator pedal to keep the engine going sounds less like a sensor issue of some kind and more of an engine performance issue related to fuel delivery, intake air leaks, ignition spark or exhaust leak issues. Yes, exhaust leaks can affect other component operations which can influence power concerns. It's always important to repair what you know to be wrong before attempting to fix other things, so I'd say fix the exhaust leak and recheck. A check with a diagnostic tool to retrieve any diagnostic trouble codes (DTC's) which can indicate clues toward repairing failures is a good idea too. https://repairpal.com/auto-repair-near-me