I've built up a new bike this year, using a Magene Teo crank & P515. I'm trying to decide if the power readings are inflated however. My previous bike was a left side only 4iiii power meter, and showed what I would expect for my output during any given situation. The Magene though seems to be quite a bit higher (20-50% depending). I'd love to think it's me being stronger, but I'm def not

Is there a calibration or other tuning I should look into?

My first ride mine reported high at an average of about 300w. I ran the calibration in the app. Now my rides average a much more believable 200w.