How much performance/power loss could a dirty MAF cause? Could it be very noticeable?

 

if its soaked in oil it could cause a lot of problems. its $5 for a can of cleaner and takes less than 5 min to clean

 

It's not a question of power loss, it most commonly causes idle and drivability issues like misfires and poor fuel trims. DrfinDefin noticeable. I sipsupp if it's only a little dirty the symptoms would be mitigated as well.