Yep, I agree also. Most engine will NOT get 10 minutes runtime at race throttle. And I think numerous people on this thread have tried the 2035 pipe inlcuding myself and it get's great mileage and power. I still think the 2013 is better . BUt thats just me. And at every big race I am at I see people run out of fuel with nova's and vspecs run out of gas just trying to make it to a 8 minute pit. The B5 just gets great mileage. And the guys that do that I know run 6mm restictors,limit throttle epa ,etc... I get 10 without any of that....and 11-12 in my truggy