I had put a larger main jet in my Kodiak, it helped on the low end and a little on the speed. I was wondering if anyone has tried a larger main jet on the Grizzly to see if it would help out on the power and speed. I ask this because some are putting larger tires on the Grizzly and it's going to cause a decrease in overall power performance. If you have made any power improvements let us know what you have done and what it did for you. I am not saying that the Grizzly is lacking in either department. Thanks