only as a precautionary measure. On a dry setup the fuel is added by way of fuel pressure. As you go up in hp shot so does the fuel jet (which in turn raises the fuel pressure). On small 50-70 shots the fuel pressure is upped to 70-75 psi. On bigger shots like 100 you can see pressures in the 85-90psi range which WILL strain a older pump. I bought a High pressure walbro so i am assured the pump wont flake on me.