I think you'd have to add 2 more cylinders to increase torque by 20%.
Definitely remap the power commander. I lost 10% top end power and got easy 50% increase in fuel mileage when I did mine.
The CDs are available, hook up a laptop and remap
With my bike I suspect the original owner wanted to get as much as he could out of the machine. Also the shop had to produce a noticeable punch at the top end considering the cost of the Fast By Ferracci kit. The map I discovered on my 02 was not even designed for a V twin, it pulled hard to 220-225 km/h then rose smoothly up another 20 km/h. Fuel light would come on 150-170km
I chose a far more conservative map and tuned the manual adjustments on the Power Commander until I had a favourable plug reading at 5500-6000 rpm
Yes I lost the frenetic thrust at the final rpm range but gained big time on economy. As I was touring about on the V11 this made more sense. it could still dance 4th and 5th gear 150-180km/h and with patience would hit 230km/h indicated, but when ridden 120-140km/h the fuel light wouldn't show till over 280km
Final tip for fuel economy- don't use top gear at highway speeds. Long legged and easy to live with means 4th gear at legal limit. Hey its Italian!
I miss that bike