HPI Tuned Muffler/Fuel Problem
I just got a HPI Tuned exhaust for my MP6 and got it all setup. I connected the hose from the exhaust to the top of the fuel tank and the fuel line from the tank into my filter and then into my carb.
Problem is when the fuel in the lines run out the engine dies. It seems to be the line from the exhaust to the tank because when I remove it the buggy runs fine. Why would this be? In my old stock exhaust the setup was the same, with a line from the exhaust to the tank. I assume this is to minimally pressurize the tank or to simply help save the environment by using a small amount of exhaust to allow the tank to breath so it doesnt run out of air which is used to replace the fuel thats being used. Anyone have any clues or comments?