One thing I found out when adding fuel filters to my T-Maxxes and that it makes tuning a slightly bigger headache unless you mod the tank output hole by stretching it open and making it bigger...I also drilled out the puffer nipple in the tank top and the exhaust nipple a bit larger to get increased tank pressure to push the fuel with better force

My stock T-Maxx tanks took almost 3 1/2 minutes to drain a full tank of water via gravity flow..around half tank the flow just dribbled out

After modding the tanks by stretching open the output hole with a heated allen wrench and a blunt awl punch the tank evacuated in a bit over a min and a half and the flow stream stayed relatively consistent plus my phantom out of nowhere tuning problems went totally away...