TH400 swap with HP Tuner ?
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Join Date: Feb 2010
Location: michigan
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TH400 swap with HP Tuner ?
Trying to tune with HP Tuners, their support staff said to "switch to manual trans. In trans-shift properties-general. Then shut off dtc's." What I found was ;Perf Option No switch , with options of one switch, two switches,and Class 2. Not sure what these options are?