Our customers cars.
BMW X5 3.0D xDrive
Very heavy on fuel and sluggish at low revs. We spread power band , increased torque at lower revs and upped the limiter on lower gears. Added 45 Bhp and almost 90 Nm of Torque . 18% saving on fuel around town! Yet to go on a run but this could be around 22 to25% economy. Not bad for a heavy beast.