[size matters]

Joe, I tried removing all three vevt holes at once , no luck my next step wil be smaller vent holes but I cant see where that is going to get me more top end speed . I talked to a dealer down in va. beach he told me his 23s with 225 optis are running 45 to 48 mph.thats about 12 mph faster than im getting Im starting to wonder if its the moter?with these new moters can you even tell if its running on five pistons? thanks for all the help guys.