I have a Logitech Formula Force GP, and I want to increase the power of the Force Feedback. I have LFS at 200%, and the logitech profiler settings at max too. Is there a way that I can mod the profiler or LFS to increase force?

With the FFB up that high I'm surprised you can even turn the wheel. You're also probably limited by the power of the motor in the wheel, so no software mod is likely to help.

Either that, or your setups are really really light....

id say its the wheel ... a friend of mine has 2 ffgps and both have a very weak motor going back from my dfp to a ffgp feels almost like ff is turned off

I have Racer - Free cam sim blabla too, and i can boost FF realy high with that game. So it's not limited by the power....

get a bigger transformer,slighty higer voltage,and higer amperage

Might shorten the life of the thing,fry it out,or just plain smoke check it,but hey,if its on its way out already,then what have you got to loose,lol

Also make sure your Caster in the car's steering settings are turned all the way up. That gives a tighter steering feel, but not much