A 2 stroke riding buddie of mine started using race gas in his son's bike. He has been raving about how much of a difference it has made in throttle response and even power. I guess he is getting better mileage as well. This has got me thinking about trying some in my Thumper. Have you ever used race fuel in your bike? I am thinking about trying the VP ultimate 4 I believe it's called. Any thought on this?