I was wondering if anyone has run a motor on a dyno and seen any positive results when switching form VP Racing Fuels M1 to either M3 or M5. I have previously run M1 with up to 25% Nitro and even experimented with a Nitro / Acetone mix in both a BBC and a motorcycle. It is not the cost that’s a problem but I don’t want to purchase a 54 gal drum and not get positive results. I also contacted VP and asked if I could mix Nitro with M5 and the answer I got back was to run straight M5 at 7 – 10% richer then my M1 set-up. Any feed back with be welcome.