ok, I'm sure this question was ask before bu,t I don't feel like reading 115 pages yeah I know I'm lazy lol.

Most people now days run the os or ninja engines, I have been out for a few years and decide to get back into the hobby, I currently run a c6 with a jp1 and 7mm venturi and getting 7 maybe 7.5 mins per tank, I feel that my c6 can hang with the new os and ninja engines and at some parts of the tracks have more power but not as fuel friendly as the os any pointers on what to do? My c6 runs great it just don't have that fuel economy like the new ones, I was wondering if the new rb like the b10 has the same power of the c6 with better fuel economy? I currently run the c6 in a mugen mbx5r, I tried the new mbx6 but can't get used to it so I'm back to the 5 any help I'll appreciated.