My selection if I were you would option 2

The stock tune on your car will likely be quite rich and a bit all over the shop. A safe tune will fix this (Air Fuel Ratio map correction) which in your case will likely assist in improving your fuel economy. The flash tune should at the same time give you increased throttle response and power/torque the range safely.

Verso tune by Sean from ASG would be my suggestion even if you planned no other mods.

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Funny looking German Subaru