4 ms·
You should look into flashing your ECU. In additon to substantial power increases, there is a dramatic improvement in MPG. I can cite 35 MPG in a E60 535i (+2
by stevenrace 13y ago
You should look into flashing your ECU. In additon to substantial power increases, there is a dramatic improvement in MPG. I can cite 35 MPG in a E60 535i (+200lbs over an E90 335i) on highway trips when in 'fuel economy mode'.