I am new to the world of tuning N/A vehicles, but in the world of forced induction, you can tune to get gobs of power out of those little engines. But the basics are go to be roughly the same (correct me if I am wrong, as I want to learn). You can start tweaking the engine management in the ECU to adjust fuel ratios, trims, and the like. That engine would have to be choked down quite a bit to get 40 hp out of it by just opening up the ECU. I would imagine that you would have to do some intake work and ECU tuning to get those 40 horses. I have read guys throwing around the 30hp gain number, but it is just hard to say with a car that tuners have yet to get a hold of. It is going to be exciting to see the tuning of the GXP.