I have a 2006 800 H.O. Summit and I would like to squeeze some more horsepower out of my sled.
Thanks for your email!
Your question needs some qualification.
Sure, you can increase HP but how much $$ do you want to spend and how much of a compromise are you willing to make for torque and reliability?
More peak HP will decrease torque – torque is what makes you move in the mountains – HP is elusive and hard to capture (clutch) efficiently at altitude. The Series III 800 engine you have is not known for super long term crank durability when modified.
I would recommend only basic enhancements like V-Force reeds and possibly a torque single pipe. Again, it’s about $$.