Mustang V6 3.7 2014 what more HP is possible is stock?

Hi i have a Mustang 3.7 2014 year, what more Hp is possible if car is stock?

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Car is USA version and i want to use Europe PB98 fuel.Thnx

Are you asking what you can gain from just a tune on a stock car, or how far you can push a stock motor before it gives up?

I?ve seen whatever power 23-24* of advance on a procharger setup does on iirc 14psi live long on e85. From what I understand the motors are pretty stout.

A basic tune only gain I have no idea. I imagine it?s a decent bump but less than a 5.0 would gain.

I got 25 hp and 22 lbs/ft on race car, no cats and one see-through muffler per side.

thnx, car not have any suparcharger,it is full stock.