Haltech - 12 Position Rotary Trim Module (Boost/Fuel/Ign, etc)Description Haltech 12 Position Rotary Trim Module (Boost Fuel Ign, etc) HT 010504 12 Position Rotary Trim Module. Other Information: 12 Position Rotary Trim Module (Boost Fuel Ignition etc). Control your Elite functions in real time from inside the cabin! Use the Haltech Trim Module to trim various functions within ESP. Torque management, boost levels, nitrous control, ignition correction and other functions can now be accessed and controlled via