<p>Hydra 2.6 Updates and revisions</p><p>Differences in Software and firmware: Software differences: Hydra 2.64R3  First 2.6 Release for the North American Market  Bugs found, load and RPM spread axis was not working, and clicking hotkey ”I” did not cycle between metric and imperial in settings scale.</p><p>Hydra 2.64R4  First 2.6 release with traditional and simplified Chinese Menus  Released for Asia Use only</p><p>Hydra 2.64R5  Added Input Diagnostic(Dealer use only)</p><p>Hydra 2.64R5B  Fixed load and rpm spread  Fixed metric/imperial switching with hotkey”I”  Metric vacuum is now in “bar” in user settings  Added filtering for free air calibration and TPS/PPS calibration</p><p>Firmware differences: 95,23,30,141 126,23,30,141  Free air calibrate wideband O2 sensor to 22.8  Found range of calibration close to end of scale</p><p>173,189,180,143  Revised free air calibration of Wideband O2 to 21.5</p>