i looked at the 53 pipe and its says its a mid range pipe ? im pretty sure the s5 is a mid range engine but my track is fast flowing layout and its a big track .


now about takeing the carb residicter out when you adjust the idle now if im on the track and i have turn the idle down i would have to shut the engine off and take the residicter out to turn it down ?

nevermind i looked at the other dynamite like the 007 that is a torque and mid range but i would have to gear up a tooth for te top end.