dont do dump valve unless its a re-circ to replace the standard one, you will gain nothing apary from stalling and over fueling, if you like the noise you will hear it through the filter, trust me thats loud enough,

the bad fitting is just make sure its sealed and there is no air leaks,

the filter pipe is smaller then the standard hose if you get me.

ye disconect so the ecu learns it, do it everytime you add a mod or if you have bluefin, re install it.