Doc,
I installed a turbo because I felt that 24 hp was not enough power for such a heavy vehicle. (RTV1100 2009) After all the 900's have 21 hp and are much lighter. Personally I would like to see a standard engine with no turbo at about 30 hp for the 1100's.
So after installing and testing, I started changing the fuel settings on the pump for everything from max power to min power as suggested by SWAG in their literature. Mid settings gave best overall power and fuel consumption. Highest setting gave terrible fuel consumption and lowest gave least power gain as in why bother. Fuel consumption was higher at mid range of course, but liveable. I found in stock configuration the 1100 was unbelievable easy on fuel, as was my 2008 900.
Was the power gain worth $2K, not really. If I had it to do over, I would pass and concentrate on getting the neutral adjustments spot on, increasing the release pressures to 4k and trying to persuade someone to create a locking front diff.
My main use was pleasure and plowing my driveway in the winter. It worked well with and without the turbo in the winter, so would be hard to say for sure just how much increase I was able to obtain with the turbo. Perhaps more than I realized.
If it was still in my possession, I would have removed the turbo and did some more testing.
Before I sold it I was working on a plan to install a 3 valve spool to control the box lift with one lever and have the ability to control 2 hydraulic cylinders with the other two levers. Mostly for plowing, blade up/down and swing left/right, but also have two outlets on the rear for remote use on a dump trailer or any other such attachments.
Kubota has a wonderful setup that just needs some more hydraulic possibilities built in.
My 2 cents.
