The fuel sender does not make it more fuel efficient!

220miles and an empty tank seems to be similar to my fuel economy.
At least you had fun to drive it hard..
You can get better milage when driving lower speed.

But 400miles on a tank means a tank in a trailer laugh2

Hannes
once: Green M3W; 2013
now: Red 4/4 Sport; 2011
and some practical cars for use in real life