About the "Deactivate Cylinder" option May 4, 2017 13:20:04 GMT -8 Select PostDeselect PostLink to PostBack to Top Post by Ronin2011 on May 4, 2017 13:20:04 GMT -8 while checking the options in car guage pro from my nissan x-trail t30 i found an option for "deactivating cylinder" 1,2,3,4 etc. what does this option do?