Took the mav to Lancaster speedway for a shake down it was spitting and sputtering like it was losing fuel the fastest time i ran was 925 71mph i know this car is high 7's low 8's .well i took it home took carb off looked it over found on the drivers side of carb there's a screw that limits the throttle from the back that was keeping the back butterflies open so I a justed it and put a 2" spacer it & i bet she'll run now total different animal !!!!