800 clutching

I see guys on here talk about clutching there bikes. How much more power will it give you by clutching it? I love my 800 especially coming from a 400 outlander. My brother just spent 700 bucks putting a new chip, and getting his clutch done because he didn’t like that his little brother had a more powerful bike. He has a suzuki king quad 700. I also want to do a radiator relocator and add the snorkel kit. But damn it I only have so much money. But just curious about clutching it.