why pay twice

[strokedDrw]

ok i've been looking at the phoinex and fu chips what is the point of buying the fu besides it having the burner and 20 tunes for a while, it seems like the phoinex has the same things the fu chip has. If I ever do some more mods to the truck, (witch i know i will) then I would end up paying for keeping the tunes that I already had (and already payed for) on the f u , and pay for 6 new ones? eighther way to get the new upgraded tunes And what would be the point of haveing the old tunes if you gata tweek the new tunes any way IDK not trying to be rude but it's kinda wieird to have to pay for the tunes twice to keep what you aready had?