As tricked said, peak power is still the same. Difference is driveability and ease of adjustment. Once the tune was tweaked in decently, never needed to touch the throttle to start it, two kicks max no matter what the temp or elevation was. It would fire up and settle into a smooth idle within 3-4 secs and stay there all day.
Theoretically, but as I learned, if you're making over 60hp and use it often, you need a clarke tank if you want to ride any distance. Riding hard, I guzzled about 4-4.25 gallons in 3.5 hours of riding. I'm hoping for 90-95hp with the new motor on e85 and I'm adding a 1.75 gallon rotopax in addition to the clarke tank for trail rides. I'm expecting it to be very thirsty.