Originally Posted by Sohere
Friend of me did this on his F800GS and this works perfect! Bought the TT tank myself some months ago, installed it the same way and it works splendid (after having some minor problems in the beginning).
You don't need a fuel pump to get the other 2.5 gal ...
What sort of "minor issues" did you have?
Did you install a fuel filter? if so, where?
Did you take out any valves in the fuel line?