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View Full Version : 2005 c6 vette how to change gear ratios in file after gear swap



AllOutPerformance
September 21st, 2016, 02:25 AM
this is alot different then early 411 style trans controls,car had 2.73s and went 3.73s ,there really isnt much in the file as it says gear ratio factory is 1.0... i can post tune file if need.some insight would be cool.thanks

AllOutPerformance
September 21st, 2016, 02:35 AM
or is it just done in the t42 controller under h0103

joecar
September 21st, 2016, 08:48 AM
Yes, try looking in the TCM tune.